Question

5

10 points
(5x+3)2
O 25x²+30x +9
O 25x²+9
O 16x² +24x+9
O 25x²-9

Answer 1

`\huge\boxed{\sf 25x\² + 30x + 9}`

Explanation:

Given expression:

= (5x + 3)²

We can also write it as:

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

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

= 25x² + 15x + 15x + 9

= 25x² + 30x + 9

`\rule[225]{225}{2}`