1.(x+2)(x-3)-(x-4)(x+4)
=x²-x-6-x²+16
=-x+10
2.(3y+1)(3y-1)-(2y+3)(2y-3)
=9y²-1-4y²+9
=5y²+8
3.(2a-b)(3a+2b)(2a+b)(2b-3a)
=(2a-b)(2a+b)(3a+2b)(2b-3...
1.(x+2)(x-3)-(x-4)(x+4)
=x²-x-6-x²+16
=-x+10
2.(3y+1)(3y-1)-(2y+3)(2y-3)
=9y²-1-4y²+9
=5y²+8
3.(2a-b)(3a+2b)(2a+b)(2b-3a)
=(2a-b)(2a+b)(3a+2b)(2b-3...