zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的代数 >

8x^7=9x^8

解答

8 x^{7} = 9 x^{8}

解答

x = 0, x = \frac{8}{9}

+1

十进制

x = 0, x = 0.88888 \dots

求解步骤

8 x^{7} = 9 x^{8}

将

9 x^{8}

para o lado esquerdo

8 x^{7} - 9 x^{8} = 0

因式分解

8 x^{7} - 9 x^{8} : - x^{7} (9 x - 8)

- x^{7} (9 x - 8) = 0

使用零因数法则： If

ab = 0

then

a = 0

or

b = 0

x = 0 or 9 x - 8 = 0

解

9 x - 8 = 0 : x = \frac{8}{9}

解为

x = 0, x = \frac{8}{9}

作图

流行的例子

5(x-1)=5(x^5+2)

5 (x - 1) = 5 (x^{5} + 2)

x^3+13x^2+57x+85=0

x^{3} + 13 x^{2} + 57 x + 85 = 0

w^{6} = - 27

0 = x (x - 4)^{3}

2x^4-9x^3+6x^2+11x-6=0

2 x^{4} - 9 x^{3} + 6 x^{2} + 11 x - 6 = 0