展开 ((0.159+x)(0.1251+x))/((0.5612-x))

解答

展开

\frac{( 0.159 + x ) ( 0.1251 + x )}{( 0.5612 - x )}

\frac{0.0198909 + 0.2841 x + x ^{2}}{0.5612 - x}

求解步骤

\frac{( 0.159 + x ) ( 0.1251 + x )}{0.5612 - x}

乘开

(0.159 + x) (0.1251 + x) : 0.0198909 + 0.2841 x + x^{2}

= \frac{0.0198909 + 0.2841 x + x ^{2}}{0.5612 - x}

e x p an d \frac{- 3 x ^{2} + 2 x + 3}{2 ( x + 1 ) ( x - 1 )}

e x p an d \frac{( x + 1 ) ^{2}}{( x + 3 ) ( x + 2 )}

e x p an d e^{t} (t^{2} - 2 t - 2)

e x p an d (\frac{s}{s ^{2} - 1}) (\frac{1}{s ^{2} + 1})

e x p an d cos (2 (t + π))