Simplify. Assume that all variables represent any real number.
-$$\sqrt { x ^ { 2 } + 18 x + 81 }$$
A) $x + 9$
B) $- x - 9$
C) $| x + 9 |$
D) $- | x + 9 |$

Name: Simplify. Assume that all variables represent any real number. -\[\sqrt { x ^ { 2 } + 18 x + 81 }\] A) $x + 9$ B) $- x - 9$ C) $| x + 9 |$ D) $- | x + 9 |$
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Question

Quizplus · Accepted Answer

The expression inside the square root is a perfect square trinomial, $(x + 9)^2$. The square root of a square is the absolute value of the base, hence $|x + 9|$.

Simplify Assume That All Variables Represent Any Real Number x2+18x+81\sqrt { x ^ { 2 } + 18 x + 81 }x2+18x+81​

Simplify Assume That All Variables Represent Any Real Number $\sqrt { x ^ { 2 } + 18 x + 81 }$