Question

factorize a^2-14a+49

Answer 1

${(x + y)}^{2} = {x}^{2} + 2xy + {y}^{2} \\ answer \: is \: {(a - 7)}^{2}$

Answer 2

a^2-14a+49

=a^2-7a-7a+49

=a(a-7) -7(a-7)

=(a-7)( a-7)