factorise: 42-x-x²
A. (x+7)(6-x)
B. (x-7)(6+x)
C. (x-6)(x+7)
D. (x+6)(x+7)
Answers
Answered by
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......
Answered by
4
Answer:
42−x−x 2
⇒−[x 2 +x−42]
⇒−[x 2 +7x−6x−42]
⇒−[(x+7)(x−6)]
⇒
(x+7)(6−x)
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