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受欢迎的代数 >

sqrt(10-x)+sqrt(x+3)=5

解答

10 - x + x + 3 = 5

解答

x = 6, x = 1

求解步骤

10 - x + x + 3 = 5

去除平方根

4 x^{2} + 72 x + 324 = 100 x + 300

解

4 x^{2} + 72 x + 324 = 100 x + 300 : x = 6, x = 1

x = 6, x = 1

验证解:

x = 6

真

, x = 1

真

解为

x = 6, x = 1

作图

流行的例子

3 - 2 x = x + 6

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

(1 - x)^{2} = 1 - x

x^2+8x+sqrt(x^2+8x)=12

x^{2} + 8 x + x^{2} + 8 x = 12

x^{3} - x^{\frac{1}{3}} = 0

2=1.69sqrt(s+4.45-3.49)

2 = 1.69 s + 4.45 - 3.49