CBSE Class 9 Answered
if x2[square]+px+q=(x+a)(x+b)then factorise x2(square)+pxy+qy2(y square)
Asked by sc.sallan | 05 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 | 07 Sep, 2009, 02:22: PM
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