a) . ( ) b) -5x3y2 + 10x3y2 + ( ) – x3y2 c)

Question

a) . ( )
b) -5x3y2 + 10x3y2 + ( ) – x3y2
c)
a-b-53y2-103y2-3y2-c

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Dulcie 4 months 2021-05-16T15:21:46+00:00 1 Answers 2 views 0

Answers ( )

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    2021-05-16T15:22:46+00:00

    a, 3x²y($\frac{1}{6}$ ²y²z

    =$\frac{1}{2}$ x⁴y³z

    b, -5x³y²+10x³y²+(-$\frac{3}{4}$x ³y²)-x³y²

    = x³y²(-5+10-$\frac{3}{4}$-1)=$\frac{13}{4}$ x³y²

    c, $\frac{1}{3}$x ²y+xy²-xy-$\frac{1}{2}$xy²-3xy-$\frac{1}{3}$x²y

    = $\frac{1}{2}$xy²-4xy

     

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )