化简 sqrt(7x)*sqrt(x)

解答

化简

7 x \cdot x

7 x

求解步骤

7 x x

使用指数法则:

(a \cdot b)^{n} = a^{n} b^{n}

7 x = 7 x

= 7 x x

使用根式运算法则:

a a = a

x x = x

= 7 x

1.5 n^{2} + 10.5 n - 147 = 0

∣ 4 x - 4 ∣ \leq 8

- \frac{4}{5} f + 1 = - 13

f a c t or 3 y^{2} - 5 y - 2

(1 + x^{2}) = 0