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For the following quadratic equation, find the discriminant.

-7x^(2)+32 x-108=-4x^(2)-4x
Answer:

For the following quadratic equation, find the discriminant.\newline7x2+32x108=4x24x -7 x^{2}+32 x-108=-4 x^{2}-4 x \newlineAnswer:

Full solution

Q. For the following quadratic equation, find the discriminant.\newline7x2+32x108=4x24x -7 x^{2}+32 x-108=-4 x^{2}-4 x \newlineAnswer:
  1. Simplify quadratic equation: First, we need to simplify the given quadratic equation by moving all terms to one side of the equation.\newline7x2+32x108=4x24x-7x^{2} + 32x - 108 = -4x^{2} - 4x\newlineAdd 4x24x^{2} to both sides:\newline7x2+4x2+32x108=4x-7x^{2} + 4x^{2} + 32x - 108 = -4x\newlineAdd 4x4x to both sides:\newline3x2+36x108=0-3x^{2} + 36x - 108 = 0
  2. Calculate discriminant: Now that we have the simplified quadratic equation in the form ax2+bx+c=0ax^{2} + bx + c = 0, we can find the discriminant. The discriminant of a quadratic equation ax2+bx+cax^{2} + bx + c is given by the formula D=b24acD = b^{2} - 4ac. For our equation, a=3a = -3, b=36b = 36, and c=108c = -108.
  3. Find discriminant value: Let's calculate the discriminant using the values of aa, bb, and cc.D=b24acD = b^{2} - 4acD=(36)24(3)(108)D = (36)^{2} - 4(-3)(-108)D=12964(3)(108)D = 1296 - 4(3)(108)D=12961296D = 1296 - 1296D=0D = 0

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