Question

разложить на множители:
(b+7)²-9
y2-0.001x³
x²-a²+0.5(x+a)

Answer 1

(b+7)²-9=(b+7-3)(b+7+3)=(b+4)(b+10)
y2-0.001x³=(y-√0.0001x^4)(y+√0.0001x^4)
x²-a²+0.5(x+a)=(x-a)(x+a)-0.5(x+a)=(x+a)(x-a-0.5)