Question

4×-7y=2×+3y.find the value of
3X²-2 y²
3x²+2y²​

Answer 1

Answer:

4x-7y=2x+3y

4x-2x=3y+7y

2x=10y

x=10y/2

x=5y

$(1) \: \: 3 {x}^{2} - 2 {y}^{2} \\ x = 5y \\ 3(5y) {}^{2} - 2 {y}^{2} \\ 3 \times 25 {y}^{2} - 2 {y}^{2} \\ 75 {y}^{2} - 2 {y}^{2} \\ 73 {y}^{2}$

$(2) \: 3 {x}^{2} + 2 {y}^{2} \\ 3(5y) {}^{2} + 2y {}^{2} \\ 3 \times 25y {}^{2} + 2 {y}^{2} \\ 75y {}^{2} + 2y {}^{2} \\ 77y {}^{2}$

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