展开 890(1+(8,1)/(100)0.78)

解答

展开

890 (1 + \frac{8 , 1}{100} 0.78)

890 \cdot 1 + 890 \cdot 0.78 \cdot \frac{8 \cdot 1 ,}{100}

求解步骤

890 (1 + \frac{8 , 1}{100} \cdot 0.78)

= 890 (1 + 0.78 \cdot \frac{8 \cdot 1 ,}{100})

使用分配律:

a (b + c) = ab + a c

a = 890, b = 1, c = \frac{8 , 1}{100} \cdot 0.78

= 890 \cdot 1 + 890 \cdot \frac{8 , 1}{100} \cdot 0.78

= 890 \cdot 1 + 890 \cdot 0.78 \cdot \frac{8 \cdot 1 ,}{100}

e x p an d z (y (6 + 12 z)) (x (8 z + 4))

e x p an d (3 x + 2 y) + (- 3 x - 8 y)

e x p an d (5 + e^{3 x})^{5}

e x p an d cos (\frac{1}{4}) (- x - 2 π)

e x p an d, (8 x^{2} - 7 x + 8) - (4 x^{2} - 3 x + 3)