Question

Factorise
x²+3x−28

maths:
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Answer 1

$\huge\fbox\blue{Solution}$

x²+3x-28=0

→ x²+7x-4x-28=0

→ x(x+7)-4(x+7)=0

→ (x-4)(x+7)=0

→ x=4 OR x=-7

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Answer 2

Answer:

x²+3x−28

$x ^{2} - 4x + 7x - 28$

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

ans

$x = 4 \: \: \: \: or \: \: \: \: x = - 7$