SOLUTION: If x = –1 and y = 2, what is the value of the expression 2x3 – 3xy ? A. 8 B. 4 C. –1 D. –4 E. –8

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: If x = –1 and y = 2, what is the value of the expression 2x3 – 3xy ? A. 8 B. 4 C. –1 D. –4 E. –8       Log On


   

Question 336578: If x = –1 and y = 2, what is the value of the expression 2x3 – 3xy ?
A. 8
B. 4
C. –1
D. –4
E. –8
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
x=-1, y=2
2x^3-3xy
=2(-1)^3-(3*-1*2)
=(2*-1)-(-6)
=-2+6
=4
.
Ed