Question

find the zeroes of the quadratic polynomial x²-9​

Answer 1

${x}^{2} - 9 = 0 \\ {x}^{2} - {3}^{2} = 0 \\ (x + 3)(x - 3) = 0 \\ (x + 3) = 0 \: \: \: \: (x - 3) = 0 \\ x = - 3 \: \: \: and \: \: x = 3$

Answer 2

Answer:

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