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受欢迎的代数 >

49w^2-25=0

解答

49 w^{2} - 25 = 0

解答

w = \frac{5}{7}, w = - \frac{5}{7}

+1

十进制

w = 0.71428 \dots, w = - 0.71428 \dots

求解步骤

49 w^{2} - 25 = 0

将

25

到右边

49 w^{2} = 25

两边除以

49

w^{2} = \frac{25}{49}

对于

x^{2} = f (a)

解为

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

w = \frac{25}{49}, w = - \frac{25}{49}

\frac{25}{49} = \frac{5}{7}

- \frac{25}{49} = - \frac{5}{7}

w = \frac{5}{7}, w = - \frac{5}{7}

作图

流行的例子

化简 (2/3)^3+1

s im pl i f y (\frac{2}{3})^{3} + 1

2 x^{2} = 2 x + 4

因式分解 8x+8

f a c t or 8 x + 8

1.2 n + 3.4 \leq 7.6

- 24 + 6 x = - 6