Question

Factorise x² - 3 x -28​

Answer 1

Step-by-step explanation:

x² - 3x -28

x^2 - 7x + 4x - 28

x(x - 7) + 4(x - 7)

(x - 7) (x + 4)

x-7=0. or. x+4=0

x= - 7. or. x= 4

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