Prove that 9x^2 - 24x + 16 is a perfect square .
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Step-by-step explanation:
To be a perfect square
b² - 4ac = 0
9x² - 24x + 16
a = 9, b = -24, c = 16
b² - 4ac = (-24)² - 4(9)(16)
= 576 - 576
= 0
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