Sponsor Area

गुणनखंड

Question
CBSEHHIMAH8004168

व्यंजक के गुणनखंड कीजिए और निर्देशानुसार भाग दीजिए:
39y3(50y2 - 98) divided by26y2(5y + 7)

Solution

∵             50y2 - 98 = 2(25y2 - 49)
                            = 2[(5y)2 - (7)2]
                            =2[(5y - 7)(5y + 7)]

∴      fraction numerator 39 straight y cubed left parenthesis 50 straight y squared minus 98 right parenthesis over denominator 26 straight y squared left parenthesis 5 straight y space plus space 7 right parenthesis end fraction space equals space fraction numerator 3 cross times 13 cross times straight y cross times straight y cross times straight y cross times 2 cross times left parenthesis 5 straight y minus 7 right parenthesis cross times left parenthesis 5 straight y plus 7 right parenthesis over denominator 2 cross times 13 cross times straight y cross times straight y cross times left parenthesis 5 straight y space plus space 7 right parenthesis end fraction
                                   = fraction numerator 3 cross times straight y cross times left parenthesis 5 straight y minus 7 right parenthesis over denominator 1 end fraction
अत:  39y3(50y2 - 98) divided by 26y2(5y + 7) = 3y(5y - 7)