Question

3. Factorize : (a + 3)2- 10( a+ 3) + 25.​

Answer 1

Answer:

We can express z2 + 6z + 9 as using a2 + 2ab + b2 = (a + b)2

= (z)2 + 2(z)(3) + (3)2

= (z + 3)2

= (z + 3)(z + 3)

Answer 2

Answer:

(a+3)²-10(a+3)+25=(a-2)²

Step-by-step explanation:

(a+3)²-10(a+3)+25

=a²+9+6a-10a-30+25

=a²+6a-10a+9-30+25

=a²-4a+4

=a²-2a-2a+4

=(a²-2a)-(2a+4)

=a(a-2)-2(a-2)

=(a-2)(a-2)

=(a-2)²