✨ ベストアンサー ✨
x²+(5xy+5x)+(6y²+11y+4)
=x²+(5y+5)x+(2x+1)(3x+4)
={x+(2y+1)}{x+(3y+4)}
=(x+2y+1)(x+3y+4)
2x²+xy-6y²-4x-y+2
=2x²+(xy-4x)-(6y²+y-2)
=2x²+(y-4)x-(2y-1)(3y+2)
={x-(2y-1)}{2x+(3y+2)}
=(x-2y+1)(2x+3y+2)
6x²-7xy+2y²+3x-y-3
=6x²+(-7xy+3x)+(2Y²-y-3)
=6x²+(-7y+3)x+(y+1)(2y-3)
={2x-(y+1)}{3x-(2y-3)}
=(2x-y-1)(3x-2y+3)
