##### h=16t^2+16t+672 Need to find h

 Algebra Tutor: None Selected Time limit: 1 Day

H is 676 but I need to know how they got that.

Oct 2nd, 2015

# h=16t^2+16t+672

direct roots of this problem is not possible so we need to use quadratic formula to solve it

h=[ -b +- sqrt (b^2 - 4ac)] / 2a

in the given problem

a= 16

b=16

c= 672

so put the values in formula

h=[ -16 +- sqrt (16^2 - 4*16*672)] / 2 (16)

h=[ -16 +- sqrt (256 - 43008)] / 32

so h is

h = -1/2 + 6.46 i          or    h = -1/2 - 6.46 i

H is not 676
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Oct 2nd, 2015

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Oct 2nd, 2015
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Oct 2nd, 2015
Dec 4th, 2016
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