If x2+=98, find the value of x3+.

Using the identity, (x+y)2=x2 + y2 + 2xy

Q9 of 84 Page 4

If x²+=98, find the value of x³+.

Using the identity, (x+y)²=x² + y² + 2xy

If x-=5, find the value of x³-.

If x²+=51, find the value of x³-.

If 2x+3y=13 and xy=6, find the value of 8x³+27y³.

If 3x-2y=11 and xy=12, find the value of 27x³-8y³.