Answer:
Step-by-step explanation:
10x²+x-2=1/2(5x-2)h
10x²+5x-4x-2=1/2(5x-2)h
5x(2x+1)-2(2x+1)=1/2(5x-2)h
2(2x+1)(5x-2)=(5x-2)h
h=[2(2x+1)(5x-2)]/(5x-2)
h=2(2x+1),5x-2≠0,x≠2/5
2x+6 - х -4
2x - x = - 4 - 6
x=-10
20x - 8 = 18x +6
20x - 18x = 6 +8
2x = 14
x=7