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受欢迎的代数 >

1x^3=2(1)+3

解答

1 x^{3} = 2 (1) + 3

解答

x = 35, x = - 35 \frac{1}{2} + 35 \frac{3}{2} i, x = - 35 \frac{1}{2} - 35 \frac{3}{2} i

求解步骤

1 \cdot x^{3} = 2 (1) + 3

乘以:

1 \cdot x^{3} = x^{3}

x^{3} = 2 \cdot 1 + 3

去除括号:

(a) = a

x^{3} = 2 \cdot 1 + 3

数字相乘:

2 \cdot 1 = 2

x^{3} = 2 + 3

数字相加:

2 + 3 = 5

x^{3} = 5

对于

x^{3} = f (a)

解为

x = 3 f (a), 3 f (a) \frac{- 1 - 3 i}{2}, 3 f (a) \frac{- 1 + 3 i}{2}

x = 35, x = 35 \frac{- 1 + 3 i}{2}, x = 35 \frac{- 1 - 3 i}{2}

化简

35 \frac{- 1 + 3 i}{2} : - 35 \frac{1}{2} + 35 \frac{3}{2} i

化简

35 \frac{- 1 - 3 i}{2} : - 35 \frac{1}{2} - 35 \frac{3}{2} i

x = 35, x = - 35 \frac{1}{2} + 35 \frac{3}{2} i, x = - 35 \frac{1}{2} - 35 \frac{3}{2} i

作图

流行的例子

4 x^{3} = 2

18 x^{3} + 5 x = 8 x^{3}

d^4-45d^2+164=0

d^{4} - 45 d^{2} + 164 = 0

x^4+x^3+7x^2+9x=0

x^{4} + x^{3} + 7 x^{2} + 9 x = 0

x^4-3x^3+2x^2-7x-11=0

x^{4} - 3 x^{3} + 2 x^{2} - 7 x - 11 = 0