Question

розкласти на множники​

Answer 1

1) 5a3 - 20ab = 5a(a2 - 4b)

2) 7x3 - 14x5 = 7x3(1 - 2x2)

3) 2*3 - 9 = 8 - 9 = -1

4) 25x2 - 16 = 5*2x2 - 4*2

(5x)2 - 4*2

(5x - 4)(5x + 4)

5) 6*3 + 106 + 25 = 216 + 106 + 25 = 347

6) 9x2-12xy+4y2 = (3x - 2y)2 = (3x - 2y)(3x - 2y)