Make y the Subject of Formula

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Rearrange equation to make y the subject. See how to deal with a square root
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Hi ! Very useful video, just wanted to check if one would lose marks if they forgot to simplify it into 4(x^2....)?

sanjan
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It was easy to put y = 1 to check our solution

infinitybeyond
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dont make sense how on earth u got 10x thats mad

eldin