因式分解-25x^2-30xy-9y^21.-25x^2-30xy-9y^22.34^2+34*32+16^23.38.9^2-2*38.9+48.9^24.54.5^2-30*16.35+4.5^2
来源:学生作业学帮网 编辑:学帮网 时间:2024/05/13 07:48:33
因式分解-25x^2-30xy-9y^2
1.-25x^2-30xy-9y^2
2.34^2+34*32+16^2
3.38.9^2-2*38.9+48.9^2
4.54.5^2-30*16.35+4.5^2
1.-25x^2-30xy-9y^2
=-(25x²+30xy+9y²)
=-(5x+3y)²
2.34^2+34*32+16^2
=34²+2*34*16+16²
=(34+16)²
=50²
=2500
3.38.9^2-2*38.9*48.9+48.9^2
=(38.9-48.9)²
=(-10)²
=100
4.54.5^2-30*16.35+4.5^2
=这个题目好像是错的
-25x^2-30xy-9y^2
=-(25x^2+30xy+9y^2)
=-(5x+3y)²
1、原式=-(25x^2+30xy+9y^2)=-(5x+3y)^2
2、原式=34^2+34*16+34*16+16^2=34(34+16)+16(34+16)=(34+16)(34+16)=(34+16)^2=50^2=2500
4^2+34*32+16^2
1.(-5x+3y)(5x-3y)
2.(34+16)^2=2500
3.37.9^2+49.9*47.9 晕
4.继续晕
人家叫因式分解。。
因式分解:-25x^2-9y^2-30xy
因式分解x^2-6xy+9y^2-10x+30y+25
因式分解:x方y+2xy+y
因式分解x^2y+10xy+25y
9x^2y+y^3-6xy^2因式分解
因式分解6xy^2-9x^2y-y^3
6xy^2-9x^2y-y^3因式分解
6xy-9x^2y-y^3 因式分解
因式分解x^3+9xy^2-12x^2y
9x^3-6x^2y+xy^2因式分解因式分解9x^3-6x^2y+xy^2
2x^2-xy-y^2因式分解
因式分解x^2+xy-2y^2
X^2Y-2XY^2 因式分解
因式分解:-x^2+2xy-y^2
xy+2x+y+2因式分解
因式分解:x^2y+xy^2=?
x^2-xy-4+2y因式分解
xy-2x+y-2因式分解,