Question

factorise: 42-x-x²

A. (x+7)(6-x)

B. (x-7)(6+x)

C. (x-6)(x+7)

D. (x+6)(x+7)​

Answer 1

Answer:

(-x+6) (x+7)

Step-by-step explanation:

Rearranging the quadratic equation

- x² - x + 42

- x² - 7x + 6x + 42

- x(x + 7) + 6(x + 7)

(-x + 6) (x + 7)

HOPE IT HELPS......

Answer 2

Answer:

42−x−x 2

⇒−[x 2 +x−42]

⇒−[x 2 +7x−6x−42]

⇒−[(x+7)(x−6)]

⇒

(x+7)(6−x)