Question

x^2 + 12x + 20 factorise it ! ​

Answer 1

Question

x^2 + 12x + 20 factories it !

Answer

x^2 + 12x + 20

= x^2 + (10+2)x + 20

= x(x+10) +2(x+10)

= (x+2)(x+10)

the required answer is

(X+2)(X+10) .

• we solved it by (X+a)(X+b) identity .
• this is known as middle splitting method .