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受欢迎的代数 >

-(4x-1)+8x-16*x^2=1

解答

- (4 \cdot x - 1) + 8 \cdot x - 16 \cdot x^{2} = 1

解答

x = 0, x = \frac{1}{4}

+1

十进制

x = 0, x = 0.25

求解步骤

- (4 x - 1) + 8 x - 16 x^{2} = 1

展开

- (4 x - 1) + 8 x - 16 x^{2} : - 16 x^{2} + 4 x + 1

- 16 x^{2} + 4 x + 1 = 1

将

1

para o lado esquerdo

- 16 x^{2} + 4 x = 0

使用求根公式求解

x_{1, 2} = \frac{- 4 \pm 4 ^{2} - 4 ( - 16 ) \cdot 0}{2 ( - 16 )}

4^{2} - 4 (- 16) \cdot 0 = 4

x_{1, 2} = \frac{- 4 \pm 4}{2 ( - 16 )}

将解分隔开

x_{1} = \frac{- 4 + 4}{2 ( - 16 )}, x_{2} = \frac{- 4 - 4}{2 ( - 16 )}

x = \frac{- 4 + 4}{2 ( - 16 )} : 0

x = \frac{- 4 - 4}{2 ( - 16 )} : \frac{1}{4}

二次方程组的解是:

x = 0, x = \frac{1}{4}

作图

流行的例子

9 - 7 ∣ 3 + 2 r ∣ \leq - 26

化简 \sqrt[3]{3}*\sqrt[3]{3}

s im pl i f y 33 \cdot 33

2 x + 3 \geq 7

因式分解 y^2+16y+28

f a c t or y^{2} + 16 y + 28

\frac{4}{5} x - \frac{2}{5} = 7