Упростите выражения (2а+3)*(а+3)-2а*(4-ba)
(2x+3)(3-2x)-(2x-5)^2-10x
-36c-3(5-6c)^2
(7b-1)(1-7b)-b(4-3b)
(2k-3)(3+2k)-(3k-5)^2-30k

(2a+3)(a+3)-2a(4-ba)2a²+6a+3a+9-8a+2a²b2a²+a+9+2a²b2a²b+2a²+a+9(2x+3)(3-2x)-(2x-5)²-10x(3+2x)(3-2x)-(2x-5)²-10x9-4x²-4x²-20x+25-10x34-8x²-30x-8x²-30x+34-36c-3(5-6c)²-36c-3*25-60c+36c²-36c-75-60c+36c²-96c-75+36c²36c²-96c-75(7b-1)(1-7b)-b(4-3b)7b-49b²-1+7b-4b+3b²10b-46b²-1-46b²+10b-1(2k-3)(3+2k)-(3k-5)²-30k(2k-3)(2k+3)-(3k-5)²-30k4k²-9-9k²-30k+25-30k-5k²+16-60k-5k²-60k+16