Question

${n }^{2} +5 {n}^{2} + 5n - 2 \: \: \: \: \: n = - 2$
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Answer 1

Answer:

n²+5n²+5n-2

-2×-2=4

5n²=5×-2×5×-2

-10×-10=100

4+100

5n=5×-2=-10

4+100-10-2

94-2=92

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