Question

How do you check to see if a number is a solution to an equation?

Answer 1

plug the solution back into the original equation and see if the equation is true

Answer 2

for example
x^2=16
x=-4,4


check --
(-4)^2=16
16=16

4^2=16
16=16

both solutions are true when plugged in to the equation

Answer 3

thanx!:)