Question

Simplify (x + 5)2 using the square of a binomial formula.

x² + 10x + 25
x²-10X-25
x²-10x+25
x² + 10x - 25

Answer 1

x^2-10x+25

Explanation:

This is the correct answer

Answer 2

`x^2 + 10x + 25`

Explanation:

Hello!

Formula:
`(a +b)^2 = a^2 + 2ab + b^2`

• a = x
• b = 5

Plug it into the formula and simplify.

Simplify

• 
  `(a +b)^2 = a^2 + 2ab + b^2`
• 
  `(x +5)^2 = x^2 + 2(x)(5) + 5^2`
• 
  `(x +5)^2 = x^2 + 10x + 25`

The answer is the first option:
`x^2 + 10x + 25`.