Math, asked by aman384675, 1 year ago

please help!!!!! find values of a and b

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tahseen619: what is the answer of this question ?

aman384675: a=0 b=-3/2

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Answered by tahseen619

$\frac{ {( \sqrt{7} - 1)}^{2} - {( \sqrt{7} + 1)}^{2} }{ ({ \sqrt{7}) }^{2} - {1}^{2} } = (a + b )\sqrt{7} \\ \frac{4 \sqrt{7} }{7 - 1} = (a + b) \sqrt{7} \\ \frac{4 \sqrt{7} }{6} = (a + b) \sqrt{7} \\ \frac{2 \sqrt{7} }{3} = (a + b) \sqrt{7} \\ \frac{2}{3} = a + b$

aman384675: first step=a^2*b^2=a+b*a-b how

tahseen619: 4ab=(a+b)² - (a-b)²

tahseen619: first step is lCM .

aman384675: bhai first step samjha de

tahseen619: I take the lcm in first step .

tahseen619: than use the formula .

aman384675: how do u take lcm of underroot numbee

aman384675: and value of b is-2/3

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please help!!!!! find values of a and b