Answer:
x = 2 + sqrt(5) or x = 2 - sqrt(5)
Step-by-step explanation using the quadratic formula:
Solve for x over the real numbers:
7 (x^2 - 4 x - 1) = 0
Divide both sides by 7:
x^2 - 4 x - 1 = 0
Add 1 to both sides:
x^2 - 4 x = 1
Add 4 to both sides:
x^2 - 4 x + 4 = 5
Write the left hand side as a square:
(x - 2)^2 = 5
Take the square root of both sides:
x - 2 = sqrt(5) or x - 2 = -sqrt(5)
Add 2 to both sides:
x = 2 + sqrt(5) or x - 2 = -sqrt(5)
Add 2 to both sides:
Answer: x = 2 + sqrt(5) or x = 2 - sqrt(5)
Answer: 4(×+1) (×-1)
Step-by-step explanation:
Answer:
Fourth and fifth ones are right
Step-by-step explanation:
1/8
hopefully this is helpful
Answer:
The solution of the given trigonometric equation
Step-by-step explanation:
<u><em>Step(i):</em></u>-
Given
<u><em>Step(ii)</em></u>:-
The solution of the given trigonometric equation
<u><em>verification </em></u>:-
put
Both are equal
∴The solution of the given trigonometric equation