2x²-7x+3
3x²-13x+10
3x²-13x-10
6x²-7x-5
5x²+6xy-8y²
6x²-11xy+3y²
x的四次方+6x²-7
3m²n²-2mn-1
x²+3x-10
a²+4a-21
m²+4m-12
x²+2x-15
y²-3y-18
2x²-x-1
6x²+7x+2
6y²-11y-10
6x²+x-15
3a²-8a+4
5x²+7x-6
5+7m-6m²
2x²+15x+7
2y²+y-6
3a²-7a-6
6x²-13x+6
4n²+4n-15
x²y²-7xy+10
x的4次方-10x²+9
5a²-41ab+8b²
x²+9x-70
x²-25+150
x²-25x-150²
x²-52x+100
x²-5x-1050
y²-34y-800
x²-155x+750
x²-75x+1350
6x²-65x+50
25x²+75x-16
400x²+600x-31
x的4次方-8x²y²-9y的4次方