find the square of: 2x²y+3xy²
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(2x²y + 3xy²)²
(2x²y)² + (3xy²)² + 2*2x²y*3xy²
4x⁴y² + 9x²y⁴ + 12x³y³
x²y²(4x² + 9y² + 12xy)
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