PSAT/NMSQT Practice Test 2 for Assistive Technology – Math ...

Since negative 4 and 2 are the two numbers whose sum is negative 2 and whose product is negative 8, they are the solutions to the equation x squared plus 2 x minus 8 equals 0. From the equation y equals x plus 4, it follows that the solutions of the system are the ordered pair negative 4 comma 0 and the ordered pair 2 comma 6. ................
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