Question

Factorise of x2-7x+12 are

a) (x-3)(x+4)
b) (x-3)(x-4)
c) (x+3)(x-4)
d) (x+3)(x+4)

Answer 1

$Solution$

$= > {x}^{2} + 7x + 12 \\ \\ = > {x}^{2} + 4x + 3x + 12 \\ \\ = > x(x + 4) + 3(x + 4) \\ \\ = > (x + 4)(x + 3) \\ \\ = > x = - 4 \: or \: x = - 3$

$D)\: is \:the\: correct \:option$

Answer 2

= x²-7x+12

=x²-4x-3x+12

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

=(x-4)(x-3)

x=4 OR x=3

The option

b) (x-3)(x+4)

is correct

ŠüJäŁ ĐôÑgaŘè ✌

I HOPE THAT YOU GOT ANSWER PLZ FOLLOW ME PLZ MAKE ME BRAINLIST ANSWER