# Non-Linear

Pro Problems > Math > Algebra > Equations > Systems of Equations > Non-Linear# Featured Pro Problems

Find the sum of x and y, if the following quadratic equations in x and y are true.

Solve the system of equations which involves a product of variables

Solve the system of equations in x and y - one of the equations is cubic!

Solve the quadratic system of equations.

Two quadratic equations in two variables - solve for m and n

A system of equations involving a product of the variables

A system of three equations in three unknowns, involving a bunch of sums

A second degree system problem that is much simpler than it looks, if you find the right approach

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Cubic and Linear, Linear and Quadratic, Mary and Laura's Cookies, One Equation, Two Variables, Product of X and Y, Quadratic System, Quadratic System, Sum and Product System, Sum of X and Y, System with a Product, System with Radical, To Sum It Up, X and Y Quadratics, X and Y System# Understanding Coronavirus Spread

A Question and Answer session with Professor Puzzler about the math behind infection spread.

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