Hello guys!
My students always use one website when the homework came out!
It has everything for algebra geometry and others, for exmaple:
Derivative calculator
Integral calculator
Definite integrator
Limit calculator
Series calculator
Equation solver
Expression simplifier
Factoring calculator
Expression calculator
Inverse function
Taylor series
Matrix calculator
Matrix arithmetic
Graphing calculator
2D shape calculators
3D shape calculators
Prime numbers
Number factorizer
Fibonacci numbers
Bernoulli numbers
Euler numbers
Complex numbers
Factorial calculator
Gamma function
Combinatorial calculator
Fractions calculator
Statistics calculator
LaTeX equation editor
http://www.numberempire.com/An awesome source to check if your answers are right.
Good luck!