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Mathematics
Lauren Bruce
6 November, 00:01
The roots of the equation 2x^2+8x-7=-2 are?
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Ruth Daugherty
6 November, 02:16
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2x^2+8x-7=-2
2x^2+8x - 5 = 0
using the formula: - x = [-8 + / - sqrt (8^2 - 4*2*-5) ] / 4
= - 2 + / - sqrt 104) / 2
= 0.5495, - 4.549
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