(i) 36x2 + 49y2 + 84xy when x = 3 and y = 6
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Step-by-step explanation:
36x²+49y²+84xy (x= 3, y = 6)
= 36×(3)²+49×(6)²+84×3×6
=324+ 1764+1512
= 3600
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