anonymous
  • anonymous
75 cos ^2 x- 34 cos x + 3 =0
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
factorise the equation in term of (ax+c)(bx+d)=0
anonymous
  • anonymous
i dont know how to factor
anonymous
  • anonymous
if u hav Ax^2 + Bx +C = 0 then, x= -B/2a + sqrt(B^2-4AC)/2A or x= -B/2A - sqrt(B^2-4AC)/2A

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anonymous
  • anonymous
so using the quadratic formula with that problem how would you do that
anonymous
  • anonymous
u substitute the A,B,C from ur problem into the formulae
anonymous
  • anonymous
can you show me
anonymous
  • anonymous
compare: 75 cos ^2 x- 34 cos x + 3 = Ay^2 + By +C therefore: A=75, B=-34, C= 3 and y=cos x

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