(2x²—x—3)+(5—4x+x²) (3y³—5y²—6)—(y—2+3y²) 用分离系数法计算
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(2x²—x—3)+(5—4x+x²) (3y³—5y²—6)—(y—2+3y²) 用分离系数法计算
(2x²—x—3)+(5—4x+x²) (3y³—5y²—6)—(y—2+3y²) 用分离系数法计算
(2x²—x—3)+(5—4x+x²) (3y³—5y²—6)—(y—2+3y²) 用分离系数法计算
(2x²—x—3)+(5—4x+x²)
=2x²-x-3+5-4x+x²
=3x²-5x+2
(3y³—5y²—6)—(y—2+3y²)
=3y³-5y²-6-y+2-3y²
=3y³-8y²-y-4