Question

I need help solving the first expression that isn’t solved and the last one. I did it and got an answer but it said it was not correct.

Answer 1

Given

`x=-3`
`x^2=(-3)^2=1*9=9`

And

`2x^2+3=2*9+3=18+3=21`

Hence

`x^2=9,2x^2+3=21`