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Mathematics 7 Online
OpenStudy (anonymous):

Harry is trying to solve the equation y = 2x^2 − x − 6 using the quadratic formula. He has made an error in one of the steps below. Find the step where Harry went wrong. Picture of the steps: http://i.imgur.com/guXnd1M.png A. Step 1 B. Step 2 C. Step 3 D. Step 4

OpenStudy (anonymous):

hint what is \((-1)^2\) ?

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