Math, asked by ashishadarshaa, 1 year ago

Plz answer all this..........plz plz

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Answered by nishijayant200
0
ch- Polynomials

Q4.   (28)3 + (-15)3 + (-13)3
    = x + y + z = 28 - 15 - 13
                     = 0
    (X)3 + (Y)3 + (Z)3 = 3XYZ
                                 = 3 x 28 x (-15 ) x (-13)
                                 = 84 x 195
                                 = 16380 ans.

ashishadarshaa: So tell the remaining sums
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nishijayant200: Question 3
nishijayant200: -( root 2x) sq. + (y)sq. + ( root 8 )sq. +2 X - root 2x X y + 2 X (y) X root 8z + 2 X root 8z X root 2z ans...
nishijayant200: Identity is (a)3 + (b)3 + (c)3 - 3abc = ( a+b+c) ( a sq. + b sq. + c sq. -ab -bc-ac
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