SOLUTION: Ralph wants to find the solution to a system of equations using y = x - 2 and y = x2 + 6x - 38. Joey says that Ralph can solve x2 + 5x - 36 = 0 to find the x-coordinates of the sol
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Question 888069: Ralph wants to find the solution to a system of equations using y = x - 2 and y = x2 + 6x - 38. Joey says that Ralph can solve x2 + 5x - 36 = 0 to find the x-coordinates of the solutions to his system. Explain and demonstrate why Joey is correct.
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
Ralph can simple equate his two formulas for y and simplify into general form quadratic that it is. See if this compares well to Joey's suggested equation.
Note:
, and
the exponents.
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