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受欢迎的代数 >

10x^2-256=300

解答

10 x^{2} - 256 = 300

解答

x = \frac{278}{5}, x = - \frac{278}{5}

+1

十进制

x = 7.45654 \dots, x = - 7.45654 \dots

求解步骤

10 x^{2} - 256 = 300

将

256

到右边

10 x^{2} = 556

两边除以

10

x^{2} = \frac{278}{5}

对于

x^{2} = f (a)

解为

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

x = \frac{278}{5}, x = - \frac{278}{5}

作图

流行的例子

9 x^{2} = 18

(k-(-1))(k+1)=-13(-1)-2k

(k - (- 1)) (k + 1) = - 13 (- 1) - 2 k

n^{2} + 2 n + 4 = 33

z^{2} - 10 z + 45 = 5

solvefor x,x^2+x^2=y^2

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