作业帮`x^2+25xy+150y^21.x^2+25xy+150y^22.(x+1)(x+2)-x-103.x^2-3xy-18y^2-3x-9y全是因式分解~
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`x^2+25xy+150y^21.x^2+25xy+150y^22.(x+1)(x+2)-x-103.x^2-3xy-18y^2-3x-9y全是因式分解~
`x^2+25xy+150y^2
1.x^2+25xy+150y^2
2.(x+1)(x+2)-x-10
3.x^2-3xy-18y^2-3x-9y
全是因式分解~
`x^2+25xy+150y^21.x^2+25xy+150y^22.(x+1)(x+2)-x-103.x^2-3xy-18y^2-3x-9y全是因式分解~
1.x^2+25xy+150y^2
=(x+15y)(x+10y);
2.(x+1)(x+2)-x-10
=x^2+3x+2-x-10
=x^2+ 2x-8
=(x+4)(x-2);
3.x^2-3xy-18y^2-3x-9y
=(x+3y)(x-6y)-3(x+3y)
=(x+3y)(x-6y-3).
1. x^2+25xy+150y^2
=(x+15Y)*(x+10Y)
=(x+15y)(x+10y); =(x+4)(x-2);
=(x+3y)(x-6y-3).
`x^2+25xy+150y^21.x^2+25xy+150y^22.(x+1)(x+2)-x-103.x^2-3xy-18y^2-3x-9y全是因式分解~
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x的平方+25xy+150y的平方还有这道题（x+y)(x+2)-x-10
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