Question

.Factorize: 25p2 + q2 + 4r2 –10pq + 8qr –20 pr

Answer 1

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THE EQUATION IS IN THE FORM OF :-

(−a + b + c )² =

a² + b² + c² − ab + bc − ac

HERE,

∴ 25p² + q² + 4r² − 10pq + 8qr − 20pr = ( −5p + q + 2r )²