Answer
-22
Work Step by Step
Given -$x^{2}$ -3xy +4$y^{3}$, x=-3, y=-1
Step 1: Put the value of x=-3 and y=-1 for each x and y in the expression
=-$(-3)^{2}$ -3(-3)(-1) +4$(-1)^{3}$
Step 2: Evaluate the exponential expression$(-3)^{2}$ = (-3)(-3) = 9
$(-1)^{3}$ = (-1)(-1)(-1) = -1
=-9-3(-3)(-1)+4(-1)
Step 3: Multiply 3(-3)(-1) = 9, 4(-1) = -4
= -9-9-4
Step 4: Add and Subtract from left to right
first add -9-9
-18-4 = -22
