Question

pls expend plsssssssssssssssssssssßddddddssssss​

Answer 1

Step-by-step explanation:

I hope you understand the solution

Answer 2

Answer:

4x²+9y²+25z²-12xy+30yz-20xz

Step-by-step explanation:

(2x-3y-5z)²

= {2x+(-3y)+(-5z)}²

= (2x)²+(-3y)²+(-5z)²+2×2x×(-3y)+2×(-3y)×(-5z)+2×(-5z)×2x

= 4x²+9y²+25z²-12xy+30yz-20xz

Answered by GAUTHMATH