|x²-2x-8|>2x
a. x<2root2
b. x<3+3root5
c. x>2+2root3
Answers
Answered by
0
Answer:
Step-by-step explanation:
x
2
− 2
2
x − 2
3
= 0
Multiplying the equation throughout by
3
,
3x
2
− 2×
3
×
2
×x − 6 = 0
(
3
x)
2
− 2×
3
x×
2
+ (
2
)
2
− (
2
)
2
− 6 = 0
(
3
x−
2
)
2
− 2 − 6 = 0
(
3
x−
2
)
2
= 8
(
3
x−
2
) = 8
Or,
(
3
x−
2
) = −8
Therefore,
x =
3
(8+
2
)
Or,
x =
3
(−8+
2
)
Similar questions