Question

factorise x²-14x+49 please make it fast​

Answer 1

Step-by-step explanation:

Refer to the attachment

Answer 2

Step-by-step explanation:

x 2 +14x+49

=x 2 +7x+7x+49, (split middle term so that resultant is same)

=(x 2 +7x)+(7x+49), (group pairof terms)

=x(x+7)+7(x+7), (factor each binomials)

=(x+7)(x+7), (factor out common factor (x+7))

=(x+7) 2

Aliter, use (a+b )2=a 2 +2ab+b 2

⇒x 2 +14x+49=x 2 +2×7x+7 2 =(x+7) 2