Question

find zeroes of
$100x { }^{2} - 81 \: find \: zeroes$
​

Answer 1

Step-by-step explanation:

100x² - 81

= (10x)² - (9)²

= (10x + 9)(10x - 9)

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Answer 2

HeYa❤️...

Answer:

Identity Used:

$(x) {}^{2} + (y) {}^{2} = (x + y)(x - y)$

Solution:

$100x {}^{2} - 81 = 0 \\ \\ (10x) {}^{2} - (9) {}^{2} = 0 \\ \\ (10x + 9)(10x - 9) = 0 \\ \\ x = \frac{ - 9}{10} \: or \: + \frac{9}{10}$

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