180 Days of Ideas for Discussion in Math Class. (as of 9July2014, we're in overtime!)

What is the value of 6x + 4y if x +3y = 8 and 2x - y = 10?Sure you can solve it like a system of equations, but one does not have to.

Two examples I love are:If x + (1/x) = 5, then what is the value of x^2 + (1/x^2) ?If x + y = 11 and xy = 15, find the value of x^2 + y^2

Eric ... not only do you not have to solve like a system, the solution is way harder that way.

What is the value of 6x + 4y if x +3y = 8 and 2x - y = 10?

ReplyDeleteSure you can solve it like a system of equations, but one does not have to.

Two examples I love are:

ReplyDeleteIf x + (1/x) = 5, then what is the value of x^2 + (1/x^2) ?

If x + y = 11 and xy = 15, find the value of x^2 + y^2

Eric ... not only do you not have to solve like a system, the solution is way harder that way.

ReplyDelete