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Algebra

2x + 2|x| >=2√2
Solve..
What is the answer .Please find and reply me fast

Profile image of Learn more
8 Years agoGrade
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1 Answer

Profile image of Arun
8 Years ago
Dear student
 
if x >0
2^x + 2^x > = 2 * sqrt(2)
2^x > = sqrt(2)
x > = ½
if x
2^x + 2^ –x > = 2 * sqrt(2)
2^2x + 1 > = 2^(x+1)  * sqrt (2)
assume 2^x = t and then it will be a quadratic equation. now you can solve it further