Question

fie functiile f:R->R,f(x)=x+3 iar g:R->R unde g(x)=2x+1.Sa se determine solutia reala a ecuatiei 2f(x)+3g(x)=-5

Answer 1

2(x+3)+3(2x+1)=-5
2x+6+6x+3=-5
8x=-5-9
8x=-14
x=-14/8=-7/4
x=-7/4

Answer 2

2(x+3)+3(2x+1)=-5
2x+6+6x+3=-5
8x=-5-9
8x=-14
x=-14/8=-7/4
x=-7/4