Question

Simplify 15./2 - 1) 10./5 + 51 0-10./2 + 51 412

Answer 1

Giving the expression

`(5√(2)-1)^2`

Using the squared binomial

`(a-b)^2=a^2-2ab+b^2`
`(5√(2)-1)^2=(5√(2))^2-2(5√(2))(1)+1^2`
`(25*2)-10√(2))+1`
`50-10√(2))+1`
`51-10√(2)`
`-10√(2)+51`

Then the correct answer is Option C