Question

factorise the following: 1) x2+6x-7 2) x2+7x-18 ​

Answer 1

Question 1

➡️Here product=-7

Sum= 6

So numbers are -6 & -1

So answer: (x-6)(x-1)

Question 2

➡️Here product=-18

Sum=7

So numbers are 9and -2

So

answer: (x+9)(x-2)

Answer 2

Step-by-step explanation:

1) x^2 + 7x - x - 7

X ( X + 7 ) - 1 ( X + 7 ) = 0

(X - 1) (X + 7) = 0

x = 1 & -7.

2) X^2 + 9X - 2X - 18

X ( X + 9 ) - 2 ( X + 9 ) = 0

(X - 2) (X + 9) = 0

X = 2 & -9.

HOPE IT HELPS!