Class
6
th
7
th
8
th
9
th
10
th
11
th
12
th
Close
Find the unknown values in inequality
1) Solve the equation x⁴ − 5x² + 4 = 0
x = +5 or -5 or x = +6 or – 7
x = +6 or -7 or x = +2 or -2
x = 4 or -6 or x = +1 or -1
x = +2 or -2 or x = +1 or -1
1/10
Solution
Answer:
x = +2 or -2 or x = +1 or -1
Explanation:
Replace x² as a
We get, a² – 5a + 4 = 0
(a – 4) (a – 1) = 0
a = 4 or a = 1
x² = 4 or x² = 1
x = +2 or -2 or x = +1 or -1
Take a break!
You have watched Screen for 30 minutes, please relax your eyes by watching any other object at 20 feet for 20 secs.
