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受欢迎的代数 >

(1-x)^2= 9/25

解答

(1 - x)^{2} = \frac{9}{25}

解答

x = \frac{2}{5}, x = \frac{8}{5}

+1

十进制

x = 0.4, x = 1.6

求解步骤

(1 - x)^{2} = \frac{9}{25}

对于

(g (x))^{2} = f (a)

解为

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

解

1 - x = \frac{9}{25} : x = \frac{2}{5}

解

1 - x = - \frac{9}{25} : x = \frac{8}{5}

二次方程组的解是:

x = \frac{2}{5}, x = \frac{8}{5}

作图

流行的例子

completesquare x^2+7x=0

co m pl e t es q u a re x^{2} + 7 x = 0

x^2-1/3 = 1/6 x^2

x^{2} - \frac{1}{3} = \frac{1}{6} x^{2}

j (x) = x^{2} + 2 x + 1

4 x^{2} - 30 x + 50 = 0

solvefor y,x=5(y+7)(y-8)

so l v e f or y, x = 5 (y + 7) (y - 8)