Question

If p = −2, q = −1 and r = 3, find the value of 2p^2 - q^2+3r^2

Answer 1

Explanation:

putting these values in the given equation

=2(-2)^2-(-1)^2+3(3)^2

=2(4)-1+3(9)

=8-1+27

=34

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Answer 2

2(-2)^2 - (-1)^2 + 3(3)^2.

2×4 -1 + 3×9

8-1+27

8-28

-20

Hope it helps

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