Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Find one value of 
x that is a solution to the equation:

(3x-1)^(2)+12 x-4=0

x=

Find one value of xx that is a solution to the equation:\newline(3x1)2+12x4=0(3x-1)^{2}+12x-4=0\newlinex=x=

Full solution

Q. Find one value of xx that is a solution to the equation:\newline(3x1)2+12x4=0(3x-1)^{2}+12x-4=0\newlinex=x=
  1. Expand squared term: First, let's expand the squared term (3x1)2(3x-1)^2.(3x1)2=(3x1)(3x1)=9x23x3x+1=9x26x+1(3x-1)^2 = (3x-1)(3x-1) = 9x^2 - 3x - 3x + 1 = 9x^2 - 6x + 1
  2. Substitute expanded term: Now, substitute the expanded term back into the original equation.\newline9x26x+1+12x4=09x^2 - 6x + 1 + 12x - 4 = 0
  3. Combine like terms: Combine like terms.\newline9x2+6x3=09x^2 + 6x - 3 = 0
  4. Solve using quadratic formula: This is a quadratic equation, and we can solve for xx by factoring, completing the square, or using the quadratic formula. The equation does not factor easily, so let's use the quadratic formula: x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}, where a=9a = 9, b=6b = 6, and c=3c = -3.
  5. Calculate discriminant: First, calculate the discriminant b24acb^2 - 4ac.\newlineDiscriminant = 624(9)(3)=36+108=1446^2 - 4(9)(-3) = 36 + 108 = 144
  6. Apply quadratic formula: Since the discriminant is positive, there are two real solutions. Now, apply the quadratic formula.\newlinex=6±1442×9x = \frac{-6 \pm \sqrt{144}}{2 \times 9}\newlinex=6±1218x = \frac{-6 \pm 12}{18}
  7. Calculate possible values: Calculate the two possible values for xx.x1=6+1218=618=13x_1 = \frac{-6 + 12}{18} = \frac{6}{18} = \frac{1}{3}x2=61218=1818=1x_2 = \frac{-6 - 12}{18} = \frac{-18}{18} = -1

More problems from Solve linear equations: mixed review