A graph shows the solutions to be (x, y) = (-6, 312) or (6, 312)
To solve algebraically, remove a factor of 2 from the second equation and use that expression to substitute for y in the first equation. 10x^2 -(8x^2 +24) = 48 2x^2 = 72 x = ±√(72/2) = ±6 y = 8*36 +24 = 312
