Evaluate (-7)( square root of 144)+7*-1

Math
(-7)(144)+7⋅-1
Simplify each term.
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Rewrite 144 as 122.
-7122+7⋅-1
Pull terms out from under the radical, assuming positive real numbers.
-7⋅12+7⋅-1
Multiply -7 by 12.
-84+7⋅-1
Multiply 7 by -1.
-84-7
-84-7
Subtract 7 from -84.
-91
Evaluate (-7)( square root of 144)+7*-1

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