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Mark Singleton
Mathematics
26 June, 19:58
Solve 2x2 + 3x - 7 = x2 + 5x + 39 for x.
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Deon Galloway
26 June, 20:16
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2x² + 3x - 7 = x² + 5x + 39
*Subtract x² + 5x + 39 from both sides*
x² - 2x - 46 = 0
Then, use the quadratic formula with a=1, b=-2, c=-46.
x = 1 + / - √ 47. (Written 1 plus or minus the square root of 47)
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