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受欢迎的代数 >

3^3(3x)^2=3^5

解答

3^{3} (3 x)^{2} = 3^{5}

解答

x = 1, x = - 1

求解步骤

3^{3} (3 x)^{2} = 3^{5}

两边除以

3^{3}

(3 x)^{2} = 3^{2}

对于

(g (x))^{2} = f (a)

解为

g (x) = f (a), - f (a)

解

3 x = 3^{2} : x = 1

解

3 x = - 3^{2} : x = - 1

二次方程组的解是:

x = 1, x = - 1

作图

流行的例子

solvefor c,c^2=h^2-c^2

so l v e f or c, c^{2} = h^{2} - c^{2}

81y^2-k=((9y+2)/3)((9y-2)/3)

81 y^{2} - k = (\frac{9 y + 2}{3}) (\frac{9 y - 2}{3})

5 t^{2} - 20 t - 25 = 0

solvefor x,f(x+h)-f=3x-4x^2

so l v e f or x, f (x + h) - f = 3 x - 4 x^{2}

(x^2)/3-x-9/6 = 3/2

\frac{x ^{2}}{3} - x - \frac{9}{6} = \frac{3}{2}