Question

Can someone please help me with this question? I will fan and give a medal...

. If x = 2 and y = -3, what is the value of 2x^2 - 3xy – 2y^2?
a. -20
b. -2
c. 8
d. 16

Answer 1

I have tried to answer it but I keep getting the wrong answer

Answer 2

can you show how you did it

Answer 3

2*2^2-3*2*-3-2*-3^2= 44

Answer 4

\[2(2)^2 -3(2)(-3)-2(-3)^2\] be careful, put brackets.

Answer 5

\[(-3)^2 = 9~~~~~ and~~~-(3)^2 = -9\] notice the difference

Answer 6

2(2)^2-3(2)(-3)-2(-3)^2
2(4)-3(2)(-3)-2(9)
8+18-18
8

Answer 7

ooh ok! thank y'all vary much!!!