Question

7x²=28 I'm not sure about how to do thus problem

Answer 1

`7x^2=28\\ x^2=4\\ x=-2 \vee x=2`

Answer 2

`7x^(2) = 28`


`x^(2) = (28)/(7)`


`(28)/(7) = 4`


`x^(2) = 4`


`x = 2` or
`x = -2`

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