Sponsor Area

गुणनखंड

Question
CBSEHHIMAH8004166

व्यंजक के गुणनखंड कीजिए और निर्देशानुसार भाग दीजिए:
12xy(9x2 - 16y2) divided by4xy(3x + 4y)

Solution

∵     9x2 - 16y2 = (3x)2 - (4y)2
                      = (3x - 4y)(3x + 4y)

fraction numerator 12 xy left parenthesis 9 straight x squared minus 16 straight y squared right parenthesis over denominator 4 xy left parenthesis 3 straight x plus 4 straight y right parenthesis end fraction equals fraction numerator 2 cross times 2 cross times 3 cross times straight x cross times straight y cross times left parenthesis 3 straight x minus 4 straight y right parenthesis cross times left parenthesis 3 straight x plus 4 straight y right parenthesis over denominator 2 cross times 2 cross times straight x cross times straight y cross times left parenthesis 3 straight x plus 4 straight y right parenthesis end fraction
                              equals space fraction numerator 3 cross times left parenthesis 3 straight x space minus space 4 straight y right parenthesis over denominator 1 end fraction
∴   12 xy left parenthesis 9 straight x squared space minus space 16 straight y squared right parenthesis space divided by space 4 xy left parenthesis 3 straight x space plus space 4 straight y right parenthesis space equals space 3 left parenthesis 3 straight x space minus space 4 straight y right parenthesis