Question

упростите вырожение:
1) (x+5)^2-5x(2-x)
2) 16y+2(y-4)^2

Answer 1

1)(x+5)²-5x(2-x)
x²+10x+25-10x-5x²
-4x²+25
2)16y+2(y-4)²
16y+2(y²-8y+16)
16y+2y²-16y+32
2y²+32