Question

Factorise
x² + 13x +40​

Answer 1

$\huge\leadsto\dag\maltese\bf\colorbox{red}{AnswER}\dag\maltese$

x² + 13x + 40 = 0

x² + 5x + 8x + 40 = 0

(x² + 5x) + (8x + 40) = 0

x(x + 5) + 8(x + 5) = 0

(x + 5) (x + 8) = 0

$\huge\implies$So, x = (-5) and x = (-8)

$\large\dag\maltese{\blue{\mathcal{itz \: @nntmbajpai}}}\dag\maltese$

Answer 2

Answer:

(x+5)(x+8)

Step-by-step explanation:

=x² + 13x +40​

=x² + 8x + 5x +40​

=x(x+8) + 5(x+8)

=(x+5)(x+8)

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