p²+q²+5a(p²+q²)
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p² – 10 p + 25 = p2 - 2×p× 5 + 52 ... =(5a)2 –[ (2b)2 - 2×2b×7c +(7c)2] Now as (a-b)2= a2 +b 2 -2 ab ... 2) q²-10q+21 =q(q-10)+21 3) p²+6p- ...
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Redox is a type of chemical reaction in which the oxidation states of atoms are changed. Redox reactions are characterized by the actual or formal transfer of electrons between chemical species, most often with one species undergoing oxidation while another species undergoes reduction
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