Question

simplify :a) -7n(n-1)+n^2

Answer 1

(−7n)(n−1)+n2
=(−7n)(n)+(−7n)(−1)+n2
=−7n2+7n+n2
=−7n2+7n+n2
=(−7n2+n2)+(7n)
=−6n2+7n

Hope this helps!

Answer 2

-6n^2 + a + 7n
hopefully this helps