If ( a + b) = 16 and $ a^3 + b^3 = 1456$, then what is the value of ab ?
Answer & explanation
Correct answer: option 4
If ( a + b) = 16
$ a^3 + b^3 = 1456$
Then what is the value of ab = ?
Put the value of a = 11 and b = 5
These values will satisfy the equations.
ab = 11 $\times$ 5 = 55