Question

(3x-5)(3x+5)-4x(3x+6)
(y-4)^2-(4-y)(4+y)
Решите срочноООО!

Answer 1

1)(3x-5)(3x+5)-4x(3x+6)=9x2-25-12x2-24x=-3x2-24x-25
2)y2-8y+16-16+y2=2y2-8y