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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: a) (2x³-x²+5x):x b) (3x⁴-2x³+x²):(-2x)

Toán Lớp 8: a) (2x³-x²+5x):x
b) (3x⁴-2x³+x²):(-2x)

Comments ( 2 )

  1. a) (2x³-x²+5x):x
    =(2x³:x) – (x²:x ) +(5x : x)
    =2x²-x+5
    b) (3x⁴-2x³+x²):(-2x)
    =[$3x^{4}$ :(-2x)] – [2x³:(-2x)] + [x² :(-2x)]
    =  $\frac{-3}{2}$ x³+x²-$\frac{1}{2}$ x                            
     

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222-9+11+12:2*14+14 = ? ( )

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