−3x+y2÷(−1)−3x+y2÷(−1) when x=8x=8 and y=5y=5.
-3x + 2y / (-1)-3(8) + 2(5) / (-1)-24 + 10 / (-1)-14 / -1 = 14
−3x+y2÷(−1) when x=8 and y=5−3x+y^2÷(−1) = −3(8) +5^2÷(−1) = -24 - 25= -49