1) xy² + x²y³ = xy²(1 + xy)
2) a⁴b² - a²b⁴ = a²b²(a² - b²) = a²b²(a - b)(a + b)
3) m²n² + mn³ = mn²(m + n)
4) a³b² + a⁵b³ = a³b²(1 + a²b)
5) c³d² - с⁴d² = c³d²(1 - c)
6) -x⁵y³ - x³y⁵ = -x³y³(x² + y²)
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Answers & Comments
1) xy² + x²y³ = xy²(1 + xy)
2) a⁴b² - a²b⁴ = a²b²(a² - b²) = a²b²(a - b)(a + b)
3) m²n² + mn³ = mn²(m + n)
4) a³b² + a⁵b³ = a³b²(1 + a²b)
5) c³d² - с⁴d² = c³d²(1 - c)
6) -x⁵y³ - x³y⁵ = -x³y³(x² + y²)