to see what you can take out of the radical, you can always do a quick "prime factoring" of the values, that way you can break it in factors to see who is what.
Solve and then use estimation to make sure your answer is reasonable.
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to see what you can take out of the radical, you can always do a quick "prime factoring" of the values, that way you can break it in factors to see who is what.
I believe y=x+2 and y=-x+3 are perpendicular lines.
