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受欢迎的代数 >

(20010^3)/(3210^6)=2x^2

解答

\frac{200 \cdot 1 0 ^{3}}{32 \cdot 1 0 ^{6}} = 2 x^{2}

解答

x = \frac{1}{8 5}, x = - \frac{1}{8 5}

+1

十进制

x = 0.05590 \dots, x = - 0.05590 \dots

求解步骤

\frac{200 \cdot 1 0 ^{3}}{32 \cdot 1 0 ^{6}} = 2 x^{2}

交换两边

2 x^{2} = \frac{200 \cdot 1 0 ^{3}}{32 \cdot 1 0 ^{6}}

化简

\frac{200 \cdot 1 0 ^{3}}{32 \cdot 1 0 ^{6}} : \frac{1}{20 \cdot 2 ^{3}}

2 x^{2} = \frac{1}{20 \cdot 2 ^{3}}

两边除以

2

x^{2} = \frac{1}{2 ^{3} \cdot 40}

对于

x^{2} = f (a)

解为

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

x = \frac{1}{2 ^{3} \cdot 40}, x = - \frac{1}{2 ^{3} \cdot 40}

\frac{1}{2 ^{3} \cdot 40} = \frac{1}{8 5}

- \frac{1}{2 ^{3} \cdot 40} = - \frac{1}{8 5}

x = \frac{1}{8 5}, x = - \frac{1}{8 5}

作图

流行的例子

solvefor x,ln(y)=4x-(x^2)/2

so l v e f or x, ln (y) = 4 x - \frac{x ^{2}}{2}

15 x^{2} - 4 x - 2 = 0

x^{2} + 36 = 144

0 = 2 x^{2} - 8 x + 8

solvefor x,2x^2=128

so l v e f or x, 2 x^{2} = 128