Question 544765
h=-16t^2+56t+240
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Solve: -16t^2+56t+240 = 0
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-8(2t^2 - 7t + 30) = 0
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Quadratic Formula:
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t = [7 +- sqrt(49 - 4*2*30)]/4
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t = [7 +- sqrt(-191)]/4
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t = [7 + isqrt(191)]/4 or t = [7 - isqrt(191)]/4
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Cheers,
Stan H.
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