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What are the solutions of the quadratic equation 49x^2 = 9?

x =1/9 and x = -1/9
x =3/7 and x = -3/7
x =3/4 and x = -3/4
x = 9/49 and x = -9/49

User JamesRocky
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2 Answers

4 votes
option 2 ..follow bedmas and do opposite operation by taking the furthest element to the other side
User Martinkabe
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7 votes

Answer:

The solutions of the quadratic equation
49x^(2) =9 are:


x_(1) = (3)/(7), x_(2) = (-3)/(7)

Explanation:

  1. Divide both sides by 49,
    (49x^(2) )/(49) = (9)/(49)
  2. Simplify
    x^(2) = (9)/(49)
  3. For
    x^(2) = f(b) the solutions are
    x = √(f(b)) , -√(f(b))
  4. So
    x_(1) = (√(9))/(√(49)), x_(2) = -(√(9))/(√(49))
  5. The solutions are:
    x_(1) = (3)/(7), x_(2) = -(3)/(7)
User OneAndOnly
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