Answer:
y=2[tex]x^{2}[/tex]-40
Step-by-step explanation:
[tex]x^{2}[/tex]+[tex]y^{2}[/tex]=25
2x+y=10 y=-2x+10
y=25-[tex]x^{2}[/tex] y=-(x+5)(x-5) plug in to the secound function
2(x+5)(x-5)+10=y
y=2([tex]x^{2}[/tex]-25)+10
y=2[tex]x^{2}[/tex]-50+10
y=2[tex]x^{2}[/tex]-40
