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Find the discriminant.\newlinez2+6z+9=0z^2 + 6z + 9 = 0

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Q. Find the discriminant.\newlinez2+6z+9=0z^2 + 6z + 9 = 0
  1. Identify coefficients: Identify the coefficients aa, bb, and cc from the quadratic equation in the form ax2+bx+c=0ax^2 + bx + c = 0. For the equation z2+6z+9=0z^2 + 6z + 9 = 0, we have: a=1a = 1 (coefficient of z2z^2) b=6b = 6 (coefficient of zz) c=9c = 9 (constant term)
  2. Calculate discriminant: Use the discriminant formula D=b24acD = b^2 - 4ac to calculate the discriminant of the quadratic equation.\newlineSubstitute the identified values into the formula:\newlineD=(6)24×1×9D = (6)^2 - 4 \times 1 \times 9
  3. Find value: Perform the calculations to find the value of the discriminant.\newlineD=364×1×9D = 36 - 4 \times 1 \times 9\newlineD=3636D = 36 - 36\newlineD=0D = 0

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