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受欢迎的代数 >

2x^2-5=67

解答

2 x^{2} - 5 = 67

解答

x = 6, x = - 6

求解步骤

2 x^{2} - 5 = 67

将

5

到右边

2 x^{2} = 72

两边除以

2

x^{2} = 36

对于

x^{2} = f (a)

解为

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

x = 36, x = - 36

36 = 6

- 36 = - 6

x = 6, x = - 6

作图

流行的例子

(q^2)/(10000)-q+3900=7000-1.1q

\frac{q ^{2}}{10000} - q + 3900 = 7000 - 1.1 q

solvefor x,x^2+5x-(p^2+p-6)=0

so l v e f or x, x^{2} + 5 x - (p^{2} + p - 6) = 0

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- 17 - 8 x^{2} = 4 x - 3 x^{2}

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