Q20 of 134 Page 4


Using factorization, find the roots of the quadratic equation: 64x 2–9 = 0.


64x 2 – 9 = 0
(8x) 2 – 3 2 = 0

Using a 2 – b 2 = (a – b)(a + b)
(8x – 3)(8x + 3) = 0
∴ .

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