if x2[square]+px+q=(x+a)(x+b)then factorise x2(square)+pxy+qy2(y square)

Asked by sc.sallan | 5th Sep, 2009, 03:45: PM

Expert Answer:

x2+px+q=(x+a)(x+b)=x2+(a+b)x+ab

p=a+b  and q =ab

x2+pxy+qy2 = x2  +(a+b)xy+aby2   = x2  +axy+bxy+aby2 = x(x+ay)+by(x+ay)=(x+ay)(x+by)

Answered by  | 7th Sep, 2009, 02:22: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.