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What is the solution of 3x2-9x equals -5?

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Anonymous

∙ 12y ago
Updated: 8/20/2019

3x2 - 9x = -5; add 5 to both sides, in order to use the quadratic formula

3x2 - 9x + 5 = 0; a = 3, b = -9, and c = 5

x = [-b ± √(b2 - 4ac)]/(2a)

x = {-(-9) ± √[(-9)2 - 4(3)(5)]}/[(2)(3)] = [9 ± √(81 - 60)]/6 = [9 ± √21)/6

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∙ 12y ago
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