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X ² + 9 = 0 quadratic equation |
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Answer» Answer: x²+9=0 a = 1 b = 9 c= 0 x = -b±√b²-4ac _________ 2a x = -9 ± √(9)²-4×1×0 _____________ 2×1 x = -9±√81-0 _______ 2 x= -9 +√81 ______ 2 x = -9+9 , -9-9 ___ ____ 2 2 x = 0 , x = -9
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