p^2+p-90 分解因式

来源：百度知道 编辑：UC知道 时间：2024/05/23 03:17:51
y^2-5/12y-1/4 分解因式
a^4-41a+40 分解因式
8ax^3-27a^4

p^2+p-90
=(p+10)(p-9)

y^2-5/12y-1/4
=(x-3/4)(x+1/3)

a^4-41a+40
=(a-1)(a^3+a^2+a-40)

8ax^3-27a^4
=a(8x^3-27a^3)
=a(2x-3a)(4x^2+6ax+9a^2)

(p-9)(p+10)

p^2+p-90=(p-10)(p+9)
y^2-5/12y-1/4=12y^2-5y-3=(3y-1)(4y-3)
a^4-41a+40 =(a-1)(a-40)
8ax^3-27a^4......

p^2+p-90
=(p+10)(p-9)

y^2-5/12y-1/4
=(y-1/3)(y-3/4)

a^4-41a+40
=(a-1)(a^3+a^2+a-40)

8ax^3-27a^4
=a(8x^3-27a^3)
=a[(2x)^3-(3a)^3]
=a(2x-3a)(4x^2+6ax+9a^2)