1.

Expand (-2x+4y-3z)²​

Answer»

Step-by-step EXPLANATION:

we KNOW that

(a+b+c)^2 =a^2 +b^2+ c^2 +2ab+2bc+2ac

so

(-2x+4y-3z)^2 = 4x^2 +16y^2 +9z^2 - 16XY -24YZ +12xz



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