Simplify the expression.
-$\sqrt { ( z - 7 ) ^ { 2 } }$
A) $| z - 7 |$
B) $z - 7$
C) $| z | - 7$
D) $7 - z$

Name: Simplify the expression. -$\sqrt { ( z - 7 ) ^ { 2 } }$ A) $| z - 7 |$ B) $z - 7$ C) $| z | - 7$ D) $7 - z$
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Question

Quizplus · Accepted Answer

The square root of a square, $\sqrt{(z-7)^2}$, simplifies to the absolute value of the original expression, $|z-7|$, because squaring a number and then taking the square root returns the original number's absolute value.

Simplify the Expression (z−7)2\sqrt { ( z - 7 ) ^ { 2 } }(z−7)2​

Simplify the Expression $\sqrt { ( z - 7 ) ^ { 2 } }$