Question

Find the value of x rais to power 3 + y rais to power3-12xy+64 when x+y=-4

Answer 1

x=3
3+y
3+y=-4
y=-4-3
y=-7
3-12(3×-7)+64
3-12×3+12×7+64
3-36+84+64
3-36+148
115