find the value of a and b if (7+√5)/(7-√5)-(7-√5)/(7+√5)=a+b√5.
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(7+√5)/(7-√5)-(7-√5)/(7+√5)=(7+√5)²-(7-√5)²/7²-(√5)²
=) (7+√5-7+√5)(7+√5+7-√5)/7²-(√5)²
=) 2√5+14/7²-√5
=) a=2√5/7²
=) b=14/7²
(7+√5)/(7-√5)-(7-√5)/(7+√5)=(7+√5)²-(7-√5)²/7²-(√5)²
=) (7+√5-7+√5)(7+√5+7-√5)/7²-(√5)²
=) 2√5+14/7²-√5
=) a=2√5/7²
=) b=14/7²
nikitajha400:
Wrong ans
okh i tryied my best
Hmmm
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