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Mathematics, 29.08.2019 18:30 sti192
Joyce is trying to solve the equation y = x2 β 8x + 7 using the quadratic formula. she has made an error in one of the steps below. find the step where joyce went wrong. step 1: x equals negative 8 plus or minus the square root of the quantity eight squared minus four times one times seven, end quantity, all over two times one. step 2: x equals negative 8 plus or minus the square root of sixty-four minus twenty-eight all over two times one. step 3: x equals negative 8 plus or minus the square root of thirty-six all over two times one. step 4: x equals negative 8 plus or minus six all over two.
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Joyce is trying to solve the equation y = x2 β 8x + 7 using the quadratic formula. she has made an e...
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