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受欢迎的代数 >

(x-6)(x+a)=x^2+6x-6a

解答

(x - 6) (x + a) = x^{2} + 6 x - 6 a

解答

x = 0

求解步骤

(x - 6) (x + a) = x^{2} + 6 x - 6 a

展开

(x - 6) (x + a) : x^{2} + a x - 6 x - 6 a

x^{2} + a x - 6 x - 6 a = x^{2} + 6 x - 6 a

将

6 a

到右边

x^{2} + a x - 6 x = x^{2} + 6 x

两边减去

x^{2} + 6 x

x^{2} + a x - 6 x - (x^{2} + 6 x) = x^{2} + 6 x - (x^{2} + 6 x)

化简

a x - 12 x = 0

分解

a x - 12 x : x (a - 12)

x (a - 12) = 0

使用零因数法则： If

ab = 0

then

a = 0

or

b = 0

x = 0

作图

流行的例子

6 x + 20 = 140

100 = n + 20

20 k + 5 = 5 k + 65

a + 15 = 2

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\frac{4 z + 1}{3} + 4 = \frac{z + 3}{2} + 2 (z + 2)