SOLUTION: please help solve by any method: a^4-5a^2+4=0

Algebra.Com
Question 194763: please help solve by any method:
a^4-5a^2+4=0

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
please help solve by any method:
a^4-5a^2+4=0
---------
(a^2 - 1)*(a^2 - 4) = 0
a^2 = 1, 4
a = ± 1
a = ± 2

RELATED QUESTIONS

9.) Solve by any method. a^4 – 5a^2 + 4 = 0 (answered by tutorcecilia)
Please help me solve this equation.... (answered by TakeATuition.com)
Please help me solve this equation.... (answered by elima)
Solve by Elimination method 5a+3b=5 -5a+b=15 Please help me solve these equations... (answered by Alan3354)
can you please help me with this question.. solve by any method. y=-x-2... (answered by bonster)
Please help me solve this system by any method. r/2 + s/3 = 6 r/4 - 1 =... (answered by edjones)
Please help! Simplify by any method. {{{ ((2)/(y+4))/((3)/(y-4)-(1)/(y^2-16))... (answered by ewatrrr)
Can you please help me solve this I keep getting the operations mixed up: Method of... (answered by Alan3354)
Solve by any method... (answered by ewatrrr)