航空百大

標題:

Maths factorize Question (F.2)

發問:

(With steps) 1. m^2-3mr-3pr+mp 2. 6p^2+6-4p-9p 3. 3p-q-6pq+2q^2 4. cd^2-c^2d-c+d 5. mx-nx+my-ny+mz-nz 6. pa+qa-ra+rb-qb-pb

最佳解答:

1. m^2－3mr－3pr+mp Sol m^2－3mr－3pr+mp =m(m－3r)+p(m－3r) =(m+p)(m－3r) 2. 6p^2+6－4p－9p Sol 6p^2+6－4p－9p =6p^2－13p+6 =(3p－2)(2p－3) 3. 3p－q－6pq+2q^2 Sol 3p－q－6pq+2q^2 =(3p－q)－2q(3p－q) =(1－2q)(3p－q) 4. cd^2－c^2d－c+d Sol cd^2－c^2d－c+d =cd(d－c)+(－c+d) =(cd+1)(d－c) 5. mx－nx+my－ny+mz－nz Sol mx－nx+my－ny+mz－nz =x(m－n)+y(m－n)+z(m－n) =(y+y+z)(m－n) 6. pa+qa－ra+rb－qb－pb Sol pa+qa－ra+rb－qb－pb =a( p+q－r)－b(－r+q+p) =(a－b)(p+q－r)

其他解答:

• 巨商一問(邊度打怪易升lv)
• hi想識朋友
• - 有咩好睇動畫.3rd round -)@1@

 

此文章來自奇摩知識+如有不便請留言告知

Question 1 = m ( m - 3 r) + p ( m - 3 r ) = ( m - 3 r ) ( m + p ) Question 3 = (3 p - q ) - 2q ( 3p - q ) = (3p - q) (1 - 2q) Question 5 = x ( m - n ) + y (m - n ) + z ( m - n ) = ( m - n ) (x + y +z) 如果仲有咩數學問題 可以上 http://forum.laspot.net/ 果度有數學老師 會即日回覆你 希望幫到你 ~