Question

Factorise:
15+x(7-2x)​

Answer 1

Step-by-step explanation:

the answer is in the attachment

Answer 2

Answer:(2x+3)(5-x)

Step-by-step explanation:

15 + x(7-2x)

15 + 7x - 2$x^{2}$    (expansion after removal of brackets)

-2$x^{2}$ + 7x + 15        (splitting the middle term)

                                    sum = 7

                                    product = -30

                                                      -30 = 10 * -3

-2$x^{2}$ + 10x - 3x + 15

+2x ( -x + 5) +3(-x + 5)

(2x+3)(5-x)