Two points are called (a, b) and (c, d).
The symbol & gt is just a career change and can be ignored!
ON & gt
Task:
Enter a > SHIFT+RCL(STO)+[(-) _A]
Enter b > SHIFT+RCL(STO)+[. ，，_B]
Enter c > SHIFT+RCL(STO)+[hyp _C].
Enter d > SHIFT+RCL(STO)+[sin _D].
Input formula:
Root sign >
(& gt
RCL+[(-)_ A]& gt；
-& gt；
RCL+[hyp _ C]& gt；
)& gt
x^2 & gt；
-& gt；
(& gt
RCL+[。 ，，_ B]& gt；
-& gt；
RCL+[sin _ D]& gt；
)& gt
=
Get the answer
If it is a computer! Just compile a file in C language (batch files can also be used)!