(4-3х)(4+х2) (3ху+у2)(х2+3ху) (х3+4х)(2-х-4х)

Question

(4-3х)(4+х2)
(3ху+у2)(х2+3ху)
(х3+4х)(2-х-4х)

Answer 1

1) (4-3х)(4+х²)=4·4+4х²-3х·4-3х·х²=16+4х²-12х-3х³.
2) (3ху+у²)(х²+3ху)=3х³у+9х²у²+х²у²+3ху³=3х³у+10х²у²+3ху³.
3) (х³+4х)(2-х-4х)=(х³+4х)(2-5х)=2х³-5х⁴+8х-20х².

Comments

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