If you mean:0 = 800 - 10x + 25 * 20 = 800-10x+25*210x = 800+50x = 8,50 = 800 - 10x + 25 * x * 20 = 800 - 10x + 50x-800 = 40x-50 = x
It has infinitely many solutions.
Yes.
'x' must be zero, so the solution set is [ 0 ].
x - 9 = 0 x - 9 = 0 x - 9 = 0 x - 9 = 0
4x2+50x = 0 4x(x+12.5) = 0 x = 0 or x = -12.5
20x2 = 41x+9 20x2-41x-9 = 0 (5x+1)(4x-9) = 0 Therefore: x = -1/5 or x = 9/4
(10x - 8)(2x - 1) = 0 x = 4/5 or 1/2. It's easier to check in decimal: 0.8 or 0.5
r=0 is the solution...
m = 0
If you mean:0 = 800 - 10x + 25 * 20 = 800-10x+25*210x = 800+50x = 8,50 = 800 - 10x + 25 * x * 20 = 800 - 10x + 50x-800 = 40x-50 = x
Yes, it is the only solution.
Yes.
a = [ 0, 4 ]
-18
root
The two equations are linear.