1 Answer

LettersBa · Answer 1 · 2019-01-30T17:55:03+0000

5n^2 = 4n^2 - 4n

Subtract 4n^2 from both sides and add 4n to both sides.

n^2 + 4n = 0

n(n + 4) = 0

n = 0 or n + 4 = 0

n = 0 or n = -4

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