The goal in 17 is to not change any of the colors and there's one correct path for each block.
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It is certainly possible. Climb the right side with teleporting so you can go back to the middle with one energy. You don't need to do a trick jump on the bottom right; just run back left and jump from there.
You can start by moving a (-) into one of the goals but you'll notice that you can't get the (+) out without moving the (-). So the solution is to bring over the other (-) to prevent the first (-) from being pulled away when you push the (+) out.