展开 5^2-14*5+54

解答

展开

5^{2} - 14 \cdot 5 + 54

9

求解步骤

5^{2} - 14 \cdot 5 + 54

数字相乘:

14 \cdot 5 = 70

= 5^{2} - 70 + 54

数字相加/相减:

- 70 + 54 = - 16

= 5^{2} - 16

5^{2} = 25

= 25 - 16

数字相减:

25 - 16 = 9

= 9

e x p an d 2 (- \frac{ln ( x )}{3 x ^{3}} - \frac{1}{9 x ^{3}}) + C

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

f (x) = \frac{( x - 1 ) ^{4}}{( x - 2 ) ^{7}}

e x p an d - \frac{1 - 16 x ^{3}}{( 1 + 8 x ^{3} ) ^{2}}

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