Question

Evaluate the expression r^3+4r^2s for r= -3 and s= 2

Answer 1

45

Explanation:

given the expression

r³ + 4r²s ( substitute r = - 3 and s = 2 ubto the expression

= (- 3)³ + 4(- 3)²(2)

= - 27 + 4(9)(2)

= - 27 + 72

= 45