Time remaining:
solve the inequality

Algebra
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two x squared minus negative 11x greater then 40

Apr 15th, 2015

two x squared minus negative 11x greater then 40

2x^2--11x=40

2x^2+11x-40=0   using quadratic formula

ax^2+bx+c

x is minus or plus the root of b squared minus 4ac divided by 2a

x=((-11-+root(11^2+4*2*40))/2*2

x=((-11_+root(121+320))/4

x=((_11-+root(441))/4

x=(-11-+21)/4

x=10/4 or  x =-32/4

x=2.5  0r -8




Apr 16th, 2015

The above of  values of x satisfies the inquality

Apr 16th, 2015

The  value of x I have obtained using quadratic  equation and both answers satisfies the inequality  if you take the value of x to be 2.5 or -8 you will get the same answer

Apr 16th, 2015

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