5 x n x n+5 x n-2, when n =-2

-32 is the answer
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8 is the answer.☺
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-52
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5 * n * n + 5 * n - 2
[ 5 * (-2)] * (-2) + [5 * (-2)] -2
[(-10) * (-2)] + (-10) -2
20 -12
 8
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5 × n × n + 5 × n - 2
= 5 × (-2) × (-2) + 5 × (-2) - 2
= -10 × (-2) + 5 × (-2) - 2
=20 + (-10) - 2
= 20 - 10 - 2
= 10 - 2
= 8
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