matlab solver with respect to x^2
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I have some questions for matlab solve
If I have an equation like x^2+x^4=a and try to find solution, I could use matlab solve
My question is instead to solve x, is there any way to solve equation with respect to x^2...?
another question is if I want to solve the above equation with a=1
How to use "solve"(S=solve(equ1, x,a==1) is not working properly...