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受欢迎的代数 >

化简 (1+3a)(x+1)-2a(x+1)+3(x+1)

解答

化简

(1 + 3 a) (x + 1) - 2 a (x + 1) + 3 (x + 1)

解答

4 x + a x + a + 4

求解步骤

(1 + 3 a) (x + 1) - 2 a (x + 1) + 3 (x + 1)

展开

(1 + 3 a) (x + 1) : x + 1 + 3 a x + 3 a

= x + 1 + 3 a x + 3 a - 2 a (x + 1) + 3 (x + 1)

展开

- 2 a (x + 1) : - 2 a x - 2 a

= x + 1 + 3 a x + 3 a - 2 a x - 2 a + 3 (x + 1)

展开

3 (x + 1) : 3 x + 3

= x + 1 + 3 a x + 3 a - 2 a x - 2 a + 3 x + 3

对同类项分组

= x + 3 x + 3 a x - 2 a x + 3 a - 2 a + 1 + 3

同类项相加:

x + 3 x = 4 x

= 4 x + 3 a x - 2 a x + 3 a - 2 a + 1 + 3

同类项相加:

3 a x - 2 a x = a x

= 4 x + a x + 3 a - 2 a + 1 + 3

同类项相加:

3 a - 2 a = a

= 4 x + a x + a + 1 + 3

数字相加:

1 + 3 = 4

= 4 x + a x + a + 4

流行的例子

展开 (4x^2-2)^3

e x p an d (4 x^{2} - 2)^{3}

化简 4^{0.5}x

s im pl i f y 4^{0.5} x

化简 (a+r+a)^3

s im pl i f y (a + r + a)^{3}

化简 x^6+(y^6)/(27)

s im pl i f y x^{6} + \frac{y ^{6}}{27}

因式分解 x^2-18x+81-y^2

f a c t or x^{2} - 18 x + 81 - y^{2}