exam Maths Puzzle Numerical Ability

If 9y^2+kyz+16z^2 is a perfect square find a value of k

Read Solution (Total 0)

exam Other Question

How to do you graph the problem with a function like this y=21-2x i dont understand on how to do these kinds of problems. I have tried doing it and using the examples but i just cant seem to get it..
can you please help me thank you -Krista