How do you evaluate #2(3-5)^3+4(-4+7)#?

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Answer 1 · 2017-04-09T15:11:46

#2(3-5)^3 + 4(-4 +7) = -4#

Order of operations (PEMDAS: parentheses, exponents, multiplication/division, addition/subtraction) requires parentheses to be completed first:

#2(3-5)^3 + 4(-4 +7) #
#= 2(-2)^3 + 4(3)#

Next evaluate the exponent:

#= 2(-8) + 4(3)#

Next complete the multiplication:

#= -16 + 12#

Finally do the addition:

#2(3-5)^3 + 4(-4 +7) = -4#

Answer 2 · 2017-04-09T15:30:12

#color(blue)-4#

#2(3-5)^3+4(-4+7)#

#:.=2(-2)^3+4(3)#

#:.=2(-2*-2*-2)+12#

#:.=2 xx - 8+12#

#:.=-16+12#

#:.color(blue)(=-4#