Asked by Matt

Factorise into quadratics

X^2-4x-21

X^2-4x+3

X^2+9x-36

11 years ago

Answered by Kuai

X^2-4x-21
(x+3)(x-7)

X^2-4x+3
(x -1)(x-3)

X^2+9x-36
(x +12)(x-3)

11 years ago

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