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Mathematics

OpenStudy (anonymous):

can you simplify the expression please? 2 [5x^2-(x^3+5)]

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OpenStudy (saifoo.khan):

2[5x^2-x^3+5] 10x^2 - x^3 + 5 Arrange, higher powers first. -x^3 + 10x^2 + 5

OpenStudy (anonymous):

-2x^3+10x^2-10

OpenStudy (anonymous):

since 2(5x^2-x^3-5)=10x^2-2x^3-10

OpenStudy (anonymous):

2[ 5x^2 -x^3 -5] 10x^2 -2x^3 -10 Ans : -2x^3 +10x^2 -10

OpenStudy (anonymous):

all of them are wrong O.o

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