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受欢迎的代数 >

x^2=1-9/25

解答

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

解答

x = \frac{4}{5}, x = - \frac{4}{5}

+1

十进制

x = 0.8, x = - 0.8

求解步骤

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

化简

1 - \frac{9}{25} : \frac{16}{25}

对于

x^{2} = f (a)

解为

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

x = \frac{16}{25}, x = - \frac{16}{25}

\frac{16}{25} = \frac{4}{5}

- \frac{16}{25} = - \frac{4}{5}

x = \frac{4}{5}, x = - \frac{4}{5}

作图

流行的例子

因式分解 6x^2-7x-20=0

f a c t or 6 x^{2} - 7 x - 20 = 0

4 x^{2} + 4 = 17 x

x^2+(x^2)/4 =20

x^{2} + \frac{x ^{2}}{4} = 20

0.5q^2-50q+30000=36192

0.5 q^{2} - 50 q + 30000 = 36192

solvefor x,tx^2+x=k

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