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# C1 past paper question watch

1. How do I answer part bi and ii? I don't have a clue. The answer to part ai) is 2(x+1.5)^2+0.5 and part aii) is 0.5.
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2. (Original post by Megan_101)
How do I answer part bi and ii? I don't have a clue. The answer to part ai) is 2(x+1.5)^2+0.5 and part aii) is 0.5.
bi is Pythagoras for the length of a line (or a formula if you're a formula person).

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