Question

a+b)^2(a-b)^2(a^2+b^2)^2

1.（a+b)^2(a-b)^2(a^2+b^2)^2
2.（2x-y+z）（-2x-y+z）
3.（3x^3y^3z)^4÷(6x^2y^3z)^2*(1/2xy^2z)

Answer 1

1.（a+b)^2(a-b)^2(a^2+b^2)^2
=(a^2-b^2)^2(a^2+b^2)^2
=(a^4-b^4)^2
=a^8-2a^4b^4+b^4
2.（2x-y+z）（-2x-y+z）
=(-y+z)^2-4x^4
=y^2+z^2-2yz-4x^4
3.（3x^3y^3z)^4÷(6x^2y^3z)^2*(1/2xy^2z)
=81x^12y^12z^4÷36x^4y^6z^2*（1/2xy^2z)
=81x^12y^12z^4÷72x^3y^4z
=9/8x^9y^8z^3
祝学习进步

追问

(3x-y)(y+3x)-(x-2y)(4x+3y)

追答

(3x-y)(y+3x)-(x-2y)(4x+3y)
=9x^2-y^2-4x^2+5xy+6y^2
=5x^2+5xy+5y^2