化简 sqrt(7)*sqrt(105)

解答

化简

7 \cdot 105

715

十进制

27.11088 \dots

求解步骤

7105

105 = 715

= 7715

使用根式运算法则:

a a = a, a \geq 0

77 = 7

= 715

\frac{q}{4} - 1 = 3

f a c t or 8 x + x z - 80 y - 10 yz

5 x^{2} + 26 x + 5 = 0

f a c t or x^{9} - x^{6} - x^{3} + 1

1 = \frac{1}{5} (x - 25)