Factorize: x2 – 7x – 30 – InterviewSolution

1.	Factorize: x2 – 7x – 30
Answer» x² – 7x – 30 Now, first we have to find out the numbers whose Sum = - 7 and Product = - 30 The numbers are 10 and 3, So, x² – 7x – 30 = x² – 10x + 3x – 30 = x(x – 10) + 3(x – 10) = (x – 10)(x + 3)

Factorize: x2 – 7x – 30

Answer»

x² – 7x – 30

Now, first we have to find out the numbers whose

Sum = - 7 and

Product = - 30

The numbers are 10 and 3,

So,

x² – 7x – 30

= x² – 10x + 3x – 30

= x(x – 10) + 3(x – 10)

= (x – 10)(x + 3)