Question
Factorise:
$x^2+7 x-98$
$x^2+7 x-98$
✓
Answer
$x^2+7 x-98$
$=x^2+14 x-7 x-98$
$=x(x+14)-7(x+14)$
$=(x+14)(x-7)$
$=x^2+14 x-7 x-98$
$=x(x+14)-7(x+14)$
$=(x+14)(x-7)$
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