system
Given the following post, respond as if you're commenting on Reddit:
human
[Magic vs Tech] How would a high tech civilization take down a high fantasy one?

Soppose they're from different realms where humans developed high advanced technology and can travel through star, take down planets etc, but then we have humans with almost godlike magic (massive teleportation, matter manipulation, revival, etc) but they have not good science.

How would this high tech civ take down the magical one? Maybe some chemical/biological weapons? Long term warfare when robots and soldier are way more cheaper and faster to produce than mages and dragons? Of course blowing up the planet is not an option.
gpt
Sufficiently advanced science is indistinguishable from magic. You're asking how one society that can do tons of stuff mine can't can defeat another one that can do tons of stuff mine can't. Without knowing the details, it's impossible to say.

Though it probably is good for them to use stuff the other is familiar with. For example, there was a war in Elcenia in which one side used a portal to another dimension and bought a neutron bomb. The defending country had country-sized wards, but given that they didn't even know what neutrons were, they didn't defend against them.

Beyond that, just use your advantages and their disadvantages against them. That varies with the setting. For example, in To the Stars, the cephalopods have vastly better cloaking and detection *technology*, but it's worthless when faced with a magical girl with a power like mind reading. The cephalopods themselves play to their strengths, and frequently pull stunts like setting off antimatter bombs next to their own bases at the first sign of an attack, taking advantage of the fact that their shields are much stronger than any human defenses.