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受欢迎的代数 >

sqrt(1)5x-7=sqrt(x)+3

解答

15 x - 7 = x + 3

解答

x = \frac{101 + 201}{50}

+1

十进制

x = 2.30354 \dots

求解步骤

1 \cdot 5 x - 7 = x + 3

展开

1 \cdot 5 x - 7 : 5 x - 7

5 x - 7 = x + 3

去除平方根

25 x^{2} - 100 x + 100 = x

解

25 x^{2} - 100 x + 100 = x : x = \frac{101 + 201}{50}, x = \frac{101 - 201}{50}

x = \frac{101 + 201}{50}, x = \frac{101 - 201}{50}

验证解:

x = \frac{101 + 201}{50}

真

, x = \frac{101 - 201}{50}

假

解是

x = \frac{101 + 201}{50}

作图

流行的例子

a + 1 - 3 a = 1

x^{\frac{7}{5}} = 128

8 x - 7 = x + 1

sqrt(3x-2)=-1+2x^2

3 x - 2 = - 1 + 2 x^{2}

solvefor x,f(x-3)=sqrt(x+3)+4

so l v e f or x, f (x - 3) = x + 3 + 4