X=a-2by^2

Make “y” as a subject

Let’s assume a,b,x real. Then all we require of y is y2 is real, so y

can be real or purely imaginary, but not an arbitrary complex number.

The hard question in these is always, do we need ±

? Here the answer is yes. It’s basically asking is there one solution or two, and in this problem we have two.

Solve for y

: x=a−2by2

Step-by-step explanation:

europa2433

europa2433

step-by-step explanation:

c-   36

taxicab circle radius 9 has 4(9) = 36 points