展开 sqrt(7)(sqrt(6)-10)

解答

展开

7 (6 - 10)

42 - 107

十进制

- 19.97677 \dots

求解步骤

7 (6 - 10)

使用分配律:

a (b - c) = ab - a c

7 (6 - 10) = 76 - 7 \cdot 10

= 76 - 7 \cdot 10

76 - 7 \cdot 10 = 42 - 107

= 42 - 107

s im pl i f y (2 - 3 i) x^{3} + (\frac{3}{2} + 5 i) x^{2} - 6

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

e x p an d \frac{( x - 4 )}{( x - 2 ) ^{2}}

e x p an d \frac{100 ( x + 55 )}{x + 550}

e x p an d \frac{n ^{2}}{( 2 i d x + 2 i ^{2} d ^{2} ) ( s + x + i d )}