Please help ! I’m so confused

part A step 2 is wrong

part B  equals  52

Step-by-step explanation: because in Part A Fernando should have in step two he multiplied in 4^2  first. and part b equals 52 because if you use PEMDAS correctly you should have add 6+4 first then 8^2 which equals  64 and then you have left 64-4x3 since in PEMDAS you first 4x3 which is 12 and 64-12 is 52 so I hope this helped :)

what steps are you having us

step-by-step explanation:

let's first notice, the center of the hyperbola is at the origin, since the focus points are equidistantly 3 units away from the origin, that also means that the distance "c" from the center to either focus is 3.

it should also be notable that, the traverse axis for this hyperbola is vertical, or namely over the y-axis and therefore, the positive fraction will be the one with y-variable.

the traverse "a" component or distance from the center to either vertex is not 2, is more than 2, so we can safely put it at √5 ≈ 2.24.