Evaluate 3(-7)+ square root of 64

Math
3(-7)+64
Simplify each term.
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Multiply 3 by -7.
-21+64
Rewrite 64 as 82.
-21+82
Pull terms out from under the radical, assuming positive real numbers.
-21+8
-21+8
Add -21 and 8.
-13
Evaluate 3(-7)+ square root of 64

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