Question

1. 9x
^2 + 30x +25

2. 36z
^2 + 12z + 1

​

Answer 1

9x² + 30x + 25

9x² + 15x + 15x + 25

3x (3x + 5) +5 (3x + 5) 3

(3x+5) (3x+5)

(3x+5)²

36z² + 12z + 1

36z²+6z+6z+1

6z(6z+1)+6z+1

6z(6z+1)+6z+1

(6z+1)(6z+1)

(6z+1)²