(7x^2+2y^2)^2-(2x^2+7y^2)^2和(x+2y)^2-y^2用分解因式怎么解啊,谁能帮下我,有分的
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/15 07:29:02
(7x^2+2y^2)^2-(2x^2+7y^2)^2和(x+2y)^2-y^2用分解因式怎么解啊,谁能帮下我,有分的(7x^2+2y^2)^2-(2x^2+7y^2)^2和(x+2y)^2-y^2用
(7x^2+2y^2)^2-(2x^2+7y^2)^2和(x+2y)^2-y^2用分解因式怎么解啊,谁能帮下我,有分的
(7x^2+2y^2)^2-(2x^2+7y^2)^2和(x+2y)^2-y^2用分解因式怎么解啊,谁能帮下我,有分的
(7x^2+2y^2)^2-(2x^2+7y^2)^2和(x+2y)^2-y^2用分解因式怎么解啊,谁能帮下我,有分的
(7x^2+2y^2)^2-(2x^2+7y^2)^2
=49x^2+4y^4+28x^2y^2-4x^4-28x^2y^2-49y^4
=45x^2-45y^2
=45(x^2-y^2)
(x+2y)^2-y^2
=x^2+4xy+4y^2-y^2
=x^2+4xy+3y^2
=(x+y)(x+3y)
用平方差公式分解,具体要你自己去做,否则,你就不会掌握。
因式分解x(x+y)(x-y)-x(x+y)^2
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
化简y(x+y)+(x+y)(x-y)-x^2
(x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2
【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y)
化简3(x-y)-7(x--y)+2(y-x)
x^2(x-y)+(y-x)
x(x-y)2-(y-x)3
[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简:{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
【(x-y)^2+(x+y)(x-y)】除以 2x
[(x-y)²+(x+y)(x-y)]除以2x
计算:y-x分之x+y+x-y分之y-y-x分之2x-y
[(x-y)^2-(x+2y)(x-2y)]/y
计算[2x^2-(x+y)(x-y)][(-x-y)(y-x)+2y^2]
(x+y)^2(x-y)^2-(x-y)(x+y)(x^2+y^2)分解因式