Mathematics, 23.12.2019 23:31 edramirez1914
Joyce is trying to solve the equation y = x2 − 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.
step 1
step 2
step 3
step 4
Answers: 1
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Joyce is trying to solve the equation y = x2 − 8x + 7 using the quadratic formula. she has made an e...
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