Question

Find rhe value of 36x square + 49y square - 84 xy if x =2 , y=2

Answer 1

Answer: Hey mate here's your answer

$= 36 {x}^{2} + 49y {}^{2} - 84xy \\ = 36(2) {}^{2} + 49(2) {}^{2} - 84(2)(2) \\ = 36 \times 4 + 49 \times 4 - 336 \\ = 144 + 196 - 336 \\ = 340 - 336 \\ = 4$

Answer 2

Answer:

36×2^2+49×2^2-84×2×3

144+196-503

340-503

-163

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