Factorize: x2 + 13x + 40

1.	Factorize: x2 + 13x + 40
Answer» Given, x² + 13x + 40 Now first find the numbers whose Sum = 13 and Product = 40 Required numbers are 8 and 5, So we get; x² + 13x + 40 = x² + 8x + 5x + 40 = x(x + 8) + 5(x + 8) = (x + 8)(x + 5)

Answer»

Given,

x² + 13x + 40

Now first find the numbers whose

Sum = 13 and

Product = 40

Required numbers are 8 and 5,

So we get;

x² + 13x + 40

= x² + 8x + 5x + 40

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

= (x + 8)(x + 5)

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