If x+=5, find the value of x3+.

Given: x+=5,Using, (a+b)3 = a3 + b3 + 3ab(a+b), we get

Q5 of 84 Page 4

If x+=5, find the value of x³+.

Given: x+=5,

Using, (a+b)³ = a³ + b³ + 3ab(a+b), we get

If a+b=10 and ab=21, find the value of a³+b³.

If a-b=4 and ab=21, find the value of a³-b³.

If x-= 7, find the value of x³-.

If x-=5, find the value of x³-.