Question

Solve n(n-9)=0

Answer 1

n = 0 or, n = 9

Answer 2

for n(n-9)=0 is necessarry just n=0 or n-9=0 but for n-9=0 is it necessary n=9 hence we get that for n(n-9)=0 solutions are n=0 and n=9

Answer 3

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