Question

find the square of:-​

Answer 1

Step-by-step explanation:

You can use the formula (a-b)²= a²-2ab+b²

(3x/4)²-2×3x/4×4y/5+(4y/5)²

9x²/16 - 2×12xy/20 + 16y²/25

I hope you'll solve after this...

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Answer 2

${( \frac{3x}{4} - \frac{4y}{5} ) }^{2} \\ = {( \frac{3x}{4}) }^{2} + { (\frac{4y}{5})}^{2} - 2 \times ( \frac{3x}{4}) \times ( \frac{4y}{5} ) \\ = \frac{9 {x}^{2} }{16} + \frac{16 {y}^{2} }{25} - \frac{6xy}{5} \\ = \frac{225 {x}^{2} + 256 {y}^{2} - 480xy}{400}$