Question

Factorise x^2 - 7x + 12

Answer 1

Answer:

(x-3) (x-4)

Step-by-step explanation:

x²- 7x + 12

= x² - 3x -4x +12

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

=(x-3) (x-4)

Answer 2

Answer:

= (x-4)(x-3)

Step-by-step explanation:

Firstly, put the pronumeral in the brackets [(x)(x)].

Then, place the signs in the right positions, the sign of the constant number (12) is a positive (+), therefore the two signs must be the same. The sign of the -7x is negative (-). Place these in the brackets [(x-)(x-)].

Next, think of the factors of 12 that add up to 7 {(3 and 4) 3x4 is 12 and 3+4 is 7}. [(x-4)(x-3)].

Have a nice day!!!!!!! :-)

KA