Question

factorise 100x2 -81​

Answer 1

Here Is Your Ans ⤵

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Identity :- (A)² - (B) = ( A - B )( A + B )

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➡100X² - 81 = 0

➡(10X)² - (9)² = 0

➡(10X - 9) ( 10X + 9) = 0

$x = \fbox{ \frac{9}{10} } \: \: or \: \: \fbox{\frac{ - 9}{10} }$

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$<marquee > hope it helps u$