[tex]\begin{gathered} 2x^2=5+y\text{ (1)} \\ 4y=-20+8x^2\text{ (2)} \\ \text{Solving y from 1} \\ 2x^2=5+y \\ y=2x^2-5 \\ Substitut\text{ing into }second\text{ equation} \\ 4y=-20+8x^2 \\ 4(2x^2-5)=-20+8x^2 \\ 8x^2-20=-20+8x^2 \\ \text{The }result\text{ing equation is }8x^2-20=-20+8x^2 \end{gathered}[/tex]
