(1)(2x+a)(3x+b)
=6x²+2xb+3xa+ab
=6x²+x(2b+3a)+ab
∵甲:6x²+11x-10,乙:-9x²-9x+10.
∴ab=10 -9÷3=-3
2b-3a=11
-3b+3a=-9
∴a=-5
b=-2
答:a=-5,b=-2
(2)将a=-5,b=-2带入得:(2x-5)(3x-2)
=6x²-4x-15x+10
=6x²-19x+10
(1)(2x+a)(3x+b)
=6x²+2xb+3xa+ab
=6x²+x(2b+3a)+ab
∵甲:6x²+11x-10,乙:-9x²-9x+10.
∴ab=10 -9÷3=-3
2b-3a=11
-3b+3a=-9
∴a=-5
b=-2
答:a=-5,b=-2
(2)将a=-5,b=-2带入得:(2x-5)(3x-2)
=6x²-4x-15x+10
=6x²-19x+10