Factorise: x2 + 5x – 104 – InterviewSolution

1.	Factorise: x2 + 5x – 104
Answer» First find the two numbers whose sum= 5 and product= -104 Clearly, the numbers are 13 and 8 ∴ we get, x² + 5x – 104 = x²+ 13x – 8x – 104 = x(x+13) – 8(x+13) = (x+13) (x-8)

Factorise: x2 + 5x – 104

Answer»

First find the two numbers whose sum= 5 and product= -104

Clearly, the numbers are 13 and 8

∴ we get, x² + 5x – 104

= x²+ 13x – 8x – 104

= x(x+13) – 8(x+13)

= (x+13) (x-8)