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If 49X2 - b = 7x …

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If 49X2 - b = 7x + 1/2 and 7x- 1/2 find the value of b

Posted by Meenakshi Kansal 5 years, 5 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 5 years, 5 months ago

49x² - b = {tex}\left( {7x + \frac{1}{2}} \right)\left( {7x - \frac{1}{2}} \right){/tex}
49x² - b = (7x)² - {tex}{\left( {\frac{1}{2}} \right)^2}{/tex}
49x² - b = 49x² - {tex}\frac 14{/tex}
b = {tex}\frac 14{/tex}

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CBSE > Class 09 > Mathematics