Question

3x2 - X-2
x2 - 7x +12
3x2 - 7x - 6
x² - 4​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

now if we are supposed to factorise it then

1. 3x^2 -x - 2

= 3x^2 - 3x +2x- 2 ( mid term splitting)

=3x ( x-1) + 2 (x-1)

= (3x+2)(x-1)

2 . x^2- 7x + 12

= x^2 -3x-4x + 12 ( mid term splitting)

= x (x-3) -4 ( x-3)

( x-4)(x- 3)

3. 3x^2 - 7x -6

= 3x^2 -9x +2x -6 ( mid term splitting)

= 3x ( x- 3) + 2( x-3)

= (3x + 2) (x-3)

4 . x^2 - 4

= x^2 - (2)^2 [ a^2 - b^2 = (a+b) (a-b)]

= (x+2) (x-2)