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Mathematics 24 Online
OpenStudy (yinshy):

Simplify the expression. 3 • (7 + 2)3 A. 243 B. 486 C. 2187 D. 19,683

OpenStudy (yinshy):

hey boss ima need your help with ummm vocab

OpenStudy (yinshy):

and my account got wiped so you know

likeabossssssss (likeabossssssss):

oh

OpenStudy (phi):

is the problem \[ 3 \cdot (7+2)^3\]?

OpenStudy (yinshy):

yes it is

OpenStudy (yinshy):

@phi

OpenStudy (phi):

this is an "order of operations" problem have you learned order of operations? Here I would first do what is in the parens

OpenStudy (yinshy):

9

OpenStudy (phi):

yes, so you now have \[ 3 \cdot 9^3 \] what operation do you do next? remember PEDMAS (or whatever they teach you) ? Parens, Exponents, Divide/Multiply, Add/Subtract

OpenStudy (phi):

the next step is to "do the exponent" which means figure out \[ 9^3\] which means figure out 9*9*9

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