Graphing Quadratic Equations in Two Variables · Review Exercise 128
Solve by using methods of factoring, the square root principle, or the quadratic formula.
Julius built a triangular display case for his coin collection. The height of the display case is six inches less than twice the width of the base. The area of the of the back of the case is 70 square inches. Find the height and width of the case.
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OpenStax, Elementary Algebra 2e · §10.5 Graphing Quadratic Equations in Two Variables · Review Exercise 128
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