Question

Q-85 Using a suitable identity, expand the following
(√3x-√2y-7)^2​

Answer 1

hey buddy your answer is here

$( \sqrt{3}x - \sqrt{2}y - 7) \\ = ( { \sqrt{3}x) }^{2} - ( { \sqrt{2y)} }^{2} - ( {7)}^{2} - 2 \times \sqrt{3} x \times \sqrt{2} y \\ + 2 \times \sqrt{2} y \times 7 - 2 \times 7 \times \sqrt{3} x \\ = 3 {x}^{2} - 2 {y}^{2} - 49 - 2 \sqrt{6} xy + 14 \sqrt{2} y - 14 \sqrt{3x } \\ \: this \: question \: is \: based \: on \: formulae \: ({a - b - c)}^{2}$

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Answer 2

Step-by-step explanation:

Q-85 Using a suitable identity, expand the following

(√3x-√2y-7)^2