Question

1 If x = 3 and y=-2 then evaluate the following expressions : rtv . 2 x²+2xy+y²
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Answer 1

Answer:

Step-by-step explanation:

Given that

x = 3 and y = - 2

2x² + 2xy + y²

=2 ( 3 )² + 2 ( 3 ) ( - 2 ) + ( - 2 )²

= 2 ( 9 ) - 12 + 4 (∵ + × - = - )

= 18 + 4 - 12

=22 - 12

= 10 is the answer.