Given that p = 2, q = -5 and r = - 4, evaluate 3p2 - q2 - r3

Given that p = 2, q = -5 and r = - 4, evaluate 3p² - q² - r³

Answer Details

Substitute the given values of p, q and r into the expression 3p² - q² - r³ to get: 3(2)² - (-5)² - (-4)³ = 12 - 25 + 64 = 51 Therefore, the answer is 51.