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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.

I need help solving the first expression that isnt solved and the last one I did it and got an answer but it said it was not correct class=


Answer :

Given

[tex]x=-3[/tex][tex]x^2=(-3)^2=1\times9=9[/tex]

And

[tex]2x^2+3=2\times9+3=18+3=21[/tex]

Hence

[tex]x^2=9,2x^2+3=21[/tex]

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