Factorise: x^2-7 x-30 - Vidyadip

Question

Factorise:
$x^2-7 x-30$

✓

Answer

$x^2-7 x-30$
$=x^2-10 x+3 x-30$
$\{-30=-10 \times 3,-7=-10+3\}$
$=x(x-10)+3(x-10)$
$=(x-10)(x+3)$

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