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Using the quadratic formula to solve 7×2 – x = 7, what are the values of x?
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7×2 – x – 7 = 0
a = 7, b = -1, c = -7
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Using the quadratic formula: number of solutions… | Khan Academy – Sal determines how many solutions the equation x²+14x+49=0 has by considering its quadratic formula, and more specifically, its discriminant.Solve quadratic equations using a quadratic formula calculator. Calculator solution will show work for real and complex roots. Uses the quadratic formula to solve a second-order polynomial equation or quadratic equation. Shows work by example of the entered equation to find the real or complex root…7×2 – x – 7 = 0. using interval notation to show intervals of increasing and decreasing and postive and negative.
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