Sederhanakanlah hasil operasi hitung berikut! a.2(3x + 5) + 3x(5x - 1) b.(2x + 3) (5y - 2) + (4x - 3) (5y - 2) c.(4x + 3)2 - (2x - 3)2

a. 2(3x+5) + 3x(5x-1) = 6x+10+15x^2-3x = 15x^2+3x+10
b. (2x+3)(5y-2)+(4x-3)(5y-2)= 10xy-4x+15y-6+20xy-8x-15y+6 = 30xy-12x
c. (4x+3)2-(2x-3)2= 8x+6-4x+6 = 4x+12