2(5x-2)-5(2x+3) помогите:с

Question

2(5x-2)-5(2x+3) помогите:с

Answer 1

2x5x-2x2-5x(2x+3)
10x-2x2-5x(2x+3)
10x-4-5x(2x+3)
10x-4-(5x2x+5x3)
10x-4-(10x+5x3)
10x-4-(10x+15)
10x-4-10x-15
0-4-15
-4-15
=-19