Question

Factorise:
x2 + 6x - 7

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Answer 1

$\sf{\implies x^2+6x-7}$

$\sf{\implies x^2-x+7x-7}$

$\sf{\implies x(x-1)+7(x-1)}$

$\sf{\implies(x-1)(x+7)}$

${\red{\sf{\to x=1}}}$

${\red{\sf{\to x=-7}}}$

Answer 2

X^2 + 7x - x -7
X ( x + 7 ) - 1 ( x+7)
(X-1) (x+7)