Объяснение:
a)7xy³+6x³y-3xy³-2x³y= 4xy³+4x³y = 4xy(y²+x²)
б)85a²в⁴-7ав³-5ав²-83а²в⁴+6ав³= 2a²B⁴-aB³-5aB²=aB²(2aB²-B-5)
в)47а²в⁴-8а²в-45а²в⁴+6ав³=2a²в⁴-8а²в+6aв³=2ав×(ав³-4а+3в²)
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Объяснение:
a)7xy³+6x³y-3xy³-2x³y= 4xy³+4x³y = 4xy(y²+x²)
б)85a²в⁴-7ав³-5ав²-83а²в⁴+6ав³= 2a²B⁴-aB³-5aB²=aB²(2aB²-B-5)
в)47а²в⁴-8а²в-45а²в⁴+6ав³=2a²в⁴-8а²в+6aв³=2ав×(ав³-4а+3в²)