solve the equation ax^4 + bx^2 + c = 0 for a=2, b=4, c=4, use z=x^2 as a substitution in matlab

main.m
% Define the coefficients a, b, c
a = 2;
b = 4;
c = 4;

% Solve for z using the substitution z = x^2
syms z
eqn = a*z^2 + b*z + c == 0;
sol = solve(eqn, z);

% Find corresponding x values
x1 = sqrt(sol(1));
x2 = -sqrt(sol(1));
x3 = sqrt(sol(2));
x4 = -sqrt(sol(2));
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