Question

Please help! It's Algebra.

Answer 1

Square: x= +or -
`√(7)`, Triangle: x= + or -
`√(23)`

Explanation:

For the square

4
`x^(2)`=28

dvide by four:

`x^(2)`=7

Take the square root of both sides

x= +or -
`√(7)`

For the Triangle

(1/2) (2x) (2x)=46

2
`x^(2)`=46

Divide by 2

`x^(2)`=23

x= + or -
`√(23)`