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2-149.
  1. Rewrite each equation below. Then solve your new equation. Be sure to check your solution using the original equation. Homework Help ✎

    1. (n + 4) + n(n + 2) + n = 0

Distribute the n.

Combine like terms, and factor the equation.

Simplify by Zero Product Property, then subtract 2 from both sides.

Remember to check your work.

n + 4 + (n2 + 2n) + n = 0

n2 + 4n + 4 = 0

(n + 2) (n + 2) = 0

n + 2 = 0

n = −2

Multiply both sides by x. Then set the equation equalto 0 and use the ZPP.

x = −4 or x = 1

Check your work.