Question

ПЖ ПОМОГИТЕ СРОЧНО
y=x²+10x+16
5)Д(y)-?
6)E(y)-?
​

Answer 1

$y = {x}^{2} + 10x + 16 \\ 0 = {x}^{2} + 10x + 16 \\ {x}^{2} + 10x + 16 = 0 \\ {x}^{2} + 8x + 2x + 16 = 0 \\ x \times (x + 8) + 2(x + 8) = 0 \\ (x + 8) \times (x + 2) = 0 \\ x + 8 = 0 \\ x + 2 = 0 \\ .....x = - 8 \\ .....x = - 2$