Question

a^2-14a+49 factorise it.​

Answer 1

Answer:

a²-14a+49

=a²-7a-7a+49

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

=(a-7)²

Answer 2

Answer:

$a {}^{2} - 14a + 49 = 0 \\ a {}^{2} - 7a - 7a + 49 = 0 \\ a(a - 7) - 7(a - 7) = 0 \\ (a - 7)(a - 7) = 0$