Question

x^2+9x+8 x^2-6x+9 x^2-x-12 x^2+10x+21 x^2-20x-125 2x^2+5x+3

Answer 1

①

x 8

x 1

(x+8)(x+1)

②

x -3

x -3

(x-3)^2

③

x 3

x -4

(x+3)(x-4)

④

x 3

x 7

(x+3)(x+7)

⑤

x 5

x -25

(x+5)(x-25)

⑥

x 1

2x 3

(x+1)(2x+3)