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.