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受欢迎的代数 >

(2/3)^2+(x)^2=1^2

解答

(\frac{2}{3})^{2} + (x)^{2} = 1^{2}

解答

x = \frac{5}{3}, x = - \frac{5}{3}

+1

十进制

x = 0.74535 \dots, x = - 0.74535 \dots

求解步骤

(\frac{2}{3})^{2} + x^{2} = 1^{2}

展开

(\frac{2}{3})^{2} + x^{2} : \frac{4}{9} + x^{2}

展开

1^{2} : 1

\frac{4}{9} + x^{2} = 1

将

\frac{4}{9}

到右边

x^{2} = 1 - \frac{4}{9}

化简

1 - \frac{4}{9} : \frac{5}{9}

对于

x^{2} = f (a)

解为

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

x = \frac{5}{9}, x = - \frac{5}{9}

\frac{5}{9} = \frac{5}{3}

- \frac{5}{9} = - \frac{5}{3}

x = \frac{5}{3}, x = - \frac{5}{3}

作图

流行的例子

(x+1)(x-8)^2(x-3)>= 0

(x + 1) (x - 8)^{2} (x - 3) \geq 0

∣ x + 6 ∣ = ∣ 6 - x ∣

s im pl i f y i^{87}

y^2+7/4 y+49/64 =0

y^{2} + \frac{7}{4} y + \frac{49}{64} = 0

8(9/49)+12(289/49)+4(x)=24

8 (\frac{9}{49}) + 12 (\frac{289}{49}) + 4 (x) = 24