x^2·x^5,y^2·y+y·y·y=a+b=5,ab=5.则a^2+b^2=(3-2x)(3+2x)=x^2·x^5,y^2·y+y·y·y=a+b=5,ab=5.则a^2+b^2=(3-2x)(3+2x)=如果4x^2-mxy+9y^2是一个完全平方式,则m的值为

Question

x^2·x^5____,y^2·y+y·y·y=______ a+b=5,ab=5.则a^2+b^2=______ (3-2x)(3+2x)=_______________
x^2·x^5_____,y^2·y+y·y·y=______
a+b=5,ab=5.则a^2+b^2=____________
(3-2x)(3+2x)=_______________
如果4x^2-mxy+9y^2是一个完全平方式,则m的值为_____________
a^5÷a^2÷a=________,(2x)^4÷(3x)^3=____________
(6x^3-12x^2+x)÷（-3x）=_______
若a^2-b=15,且a+b=5,则a-b的值是_______
因式分解：a^3-4a=___

Answer 1

x^2·x^5___=x^7__,
y^2·y+y·y·y=__2y³____
a+b=5,ab=5.则a^2+b^2=_____15_______
(3-2x)(3+2x)=____9-4x²___________
如果4x^2-mxy+9y^2是一个完全平方式,则m的值为___6或-6__________
a^5÷a^2÷a=___a²_____,
(2x)^4÷(3x)^3=_____16x/27_______
(6x^3-12x^2+x)÷（-3x）=__-2x²+4x-1/3_____
若a^2-b ^2=15,且a+b=5,则a-b的值是__3_____
a^3-4a=__a(a+2)(a-2)_