Answer:
-4x^2 -2x+6
Step-by-step explanation:
2x^2+(4x-6x^2)+9-(6x+3)
Distribute the minus sign
2x^2+4x-6x^2+9-6x-3
Combine like terms
2x^2 -6x^2 +4x -6x +9-3
-4x^2 -2x+6
F'(x) = 7sec x . tan x - 5.
L = 2W + 1..................(1)
2L + 2W = 74
2L = -2W + 74..............(2) Adding (1) and (2):-
3L = 75
L = 75/3 = 25
W = (25 - 1) / 2 = 12
length is 25 inches and width = 12 inches
(2x+11) = ( 5x-19)
subtract 2x from each side. So 2x - 2x =0 and 5x - 2x = 3x.
Now your equation is 11 = 3x- 19.
Next, add 19 to each side. - 19 + 19 = 0 and 11 + 19 = 30.
Your equation is now 30 = 3x.
Now divide by 3x on each side. 3x / 3x= x and 30 / 3 = 10.
<em>So your answer would be x = 10</em>.
