Help plz brainliest.

Answer:
Follows are the solution to this question:
Explanation:
In this question, the equation will be written as the coefficients for each of the bases, that is from the above quantum states b is given as follows:
[tex]\to | b \rangle = 0.4 | 00 \rangle + 0.65 | 01 \rangle + 0.2 | 10 \rangle + 0.61 | 11 \rangle[/tex]
Therefore the equation can be written as in the state b:
[tex]\to \mathbf{state_b = [0.4, 0.65, 0.21, 0.61]}[/tex]