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If x = 2 and y = -3, what is the value of 2x^2 - 3xy - 2y^2 ?
JMAP math expression
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If x = 2 and y = -3, what is the value of 2x2 - 3xy - 2y2 ?

1) -20

2) -2

3) 8

4) 16

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peter
Asked by peterrep:938
University of Lagos Nigeria
24 June 2020

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judziy
Judziy answeredrep:909
University of Benin Nigeria
24 June 2020
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2x2 - 3xy - 2y2

When x = 2 and y = -3, the expression becomes:

2(2)2 - 3(2)(-3) - 2(-3)2

=2(4) + 18 - 2(9)

= 8 + 18 - 18

= 8

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