# algebra

posted by .

sqrt(45)+ sqrt(20)+ sqrt(5)-sqrt(125)=??
I came up with 6sqrt5 I know it's wrong. I think I messed up the breakdown of the sqrt of 125

• algebra -

sqrt(125) = sqrt (5*25) = 5 sqrt(5)

• algebra -

sqrt(9*5) + sqrt(4*5) + sqrt5 - sqrt(25*5)
= (3 +2 +1 -5)sqrt5 = sqrt5

• algebra -

So is the answer 6sqrt(5)?? Thank you

• algebra -

sqrt (9*5)+sqrt(4*5)+sqrt(5) -5 sqrt(5)

3 sqrt(5) +2 sqrt (5) + 1 sqrt(5) - 5 sqrt (5)

that is
1 sqrt(5)

• algebra -

ohhh I see what I did wrong Thanks you 2

• algebra -

No, it is NOT 6 sqrt(5)

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sqrt 6 * sqrt 8 also sqrt 7 * sqrt 5 6.92820323 and 5.916079783 So you can see the steps — sqrt 6 * sqrt 8 = sqrt 48 sqrt 7 * sqrt 5 = sqrt 35 I hope this helps a little more. Thanks for asking.

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More Similar Questions
The text passage contains a mathematical question and an answer to that question. The question is: "sqrt(45)+ sqrt(20)+ sqrt(5)-sqrt(125)=??" and the answer provided is "1 sqrt(5)".
single_question_with_answer
Given a text passage, determine:
    1. If it contains a mathematical question (including word problems or calculations)
    2. If an answer to that mathematical question is provided in the text

First, describe the content structure you found in 1-2 sentences.

Then provide your analysis in the following format:
TYPE: <one of the following values>
- NO_QUESTION
- SINGLE_QUESTION
- SINGLE_QUESTION_WITH_ANSWER
- MULTIPLE_QUESTIONS
- MULTIPLE_QUESTIONS_WITH_ANSWERS
system
# algebra

posted by .

sqrt(45)+ sqrt(20)+ sqrt(5)-sqrt(125)=??
I came up with 6sqrt5 I know it's wrong. I think I messed up the breakdown of the sqrt of 125

• algebra -

sqrt(125) = sqrt (5*25) = 5 sqrt(5)

• algebra -

sqrt(9*5) + sqrt(4*5) + sqrt5 - sqrt(25*5)
= (3 +2 +1 -5)sqrt5 = sqrt5

• algebra -

So is the answer 6sqrt(5)?? Thank you

• algebra -

sqrt (9*5)+sqrt(4*5)+sqrt(5) -5 sqrt(5)

3 sqrt(5) +2 sqrt (5) + 1 sqrt(5) - 5 sqrt (5)

that is
1 sqrt(5)

• algebra -

ohhh I see what I did wrong Thanks you 2

• algebra -

No, it is NOT 6 sqrt(5)

## Similar Questions

1. ### Inequality

When I solve the inquality 2x^2 - 6 < 0, I get x < + or - sqrt(3) So how do I write the solution?

3. ### math,algebra,help

Directions are simplify by combining like terms. x radiacal 18 -3 radical 8x^2 can someone show me how to do these types of problems. thanks I cant determine the second term. For the first, I think you meant x sqrt(18) which reduces …
4. ### Math

How do you find a square root of a number that's not a perfect square?
5. ### Mathematics

sqrt 6 * sqrt 8 also sqrt 7 * sqrt 5 6.92820323 and 5.916079783 So you can see the steps — sqrt 6 * sqrt 8 = sqrt 48 sqrt 7 * sqrt 5 = sqrt 35 I hope this helps a little more. Thanks for asking.

Could someone show me how to solve these problems step by step.... I am confused on how to fully break this down to simpliest terms sqrt 3 * sqrt 15= sqrt 6 * sqrt 8 = sqrt 20 * sqrt 5 = since both terms are sqrt , you can combine …
7. ### Calculus

Please look at my work below: Solve the initial-value problem. y'' + 4y' + 6y = 0 , y(0) = 2 , y'(0) = 4 r^2+4r+6=0, r=(16 +/- Sqrt(4^2-4(1)(6)))/2(1) r=(16 +/- Sqrt(-8)) r=8 +/- Sqrt(2)*i, alpha=8, Beta=Sqrt(2) y(0)=2, e^(8*0)*(c1*cos(0)+c2*sin(0))=c2=2 …
8. ### Math/Calculus

Solve the initial-value problem. Am I using the wrong value for beta here, 2sqrt(2) or am I making a mistake somewhere else?
9. ### Calculus

Evaluate the indefinite integral: 8x-x^2. I got this but I the homework system says its wrong:sqrt((-x-8)x)/(2*sqrt(x-8)*sqrt(x))*(((sqrt(x-8)*(x-4)*sqrt(x))-32*log(sqrt(x-8)+sqrt(x))
10. ### Algebra

Evaluate sqrt7x (sqrt x-7 sqrt7) Show your work. sqrt(7)*sqrt(x)-sqrt(7)*7*sqrt(7) sqrt(7*x)-7*sqrt(7*7) sqrt(7x)-7*sqrt(7^2) x*sqrt 7x-49*x ^^^ would this be my final answer?

More Similar Questions
user
The text passage contains a mathematical question and an answer to that question. The question is: "sqrt(45)+ sqrt(20)+ sqrt(5)-sqrt(125)=??" and the answer provided is "1 sqrt(5)".

TYPE: SINGLE_QUESTION_WITH_ANSWER