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Algebra House
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4x³ + x²y - 36x - 9y 4x³ - 36x + x²y - 9y {re-arranged terms} 4x(x² - 9) + y(x² - 9) {factored out GCF's} (4x + y)(x² - 9) {factored out x² - 9} (4x + y)(x + 3)(x - 3) {factored the difference of two squares} - Algebra House
