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 bel ow. Find the step where Harry went wrong.
1 answer:
He made a mistake in step #2. It seemed to be a trivial mistake because it involved signs, but it still had a great impact. Since step#2, his solution was already wrong. Instead of (-1)²-4(2)(-6) = 1 + 48 = 49 What he did is (-1)²-4(2)(-6) = -1 + 48 = 47
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