The important thing to notice is that you can add and subtract variables to the other side of an equation just like you can add and subtract numbers to the other side. In other words we must add to both sides or subtract from both sides one of the quantities that contains the variable. What is on the left x 2 is equal to what is on the right 4 So an equation is like a statement this equals that.
X2 3 2.
Now this turns into a problem very similar to what we saw in the last video so now I ask you. Square Sides not Terms. Sometimes we can apply a function to both sides eg. 8x 2x 3 - 4x 4 7x2 x 5 - 10 0.