(2x²+xy+3y²) (3x²+5xy)
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Step-by-step explanation:
=(2x²+xy+3x)(3x²+5xy)
=3x²(2x²+xy+3x)+5xy(2x²+xy+3x)
=6x⁴+3x³y+9x³+10x³y+5x²y²+15x²y
=6x⁴+13x³y+9x³+5x²y²+15x²y
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