Question

Factories the following expression : x2- 7X + 12
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Answer 1

Answer:

x^2 - 7x + 12 = 0

x^2 - 4x - 3x + 12 = 0

x(x - 4) -3(x - 4) = 0

(x - 3)(x - 4) = 0

x = 3,4

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Answer 2

x²-7x+12 (1 x 12 = 12)

now factorise 12

/ \

4 3

therefore, x² -4x -3x + 12

now grouping

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

= ( x - 3 ) (x - 4 )