if 3 + root 7 divided by 3 minus root 7 + 3 minus root 7 / 3 + root 7 is equal to a + b root 7 what is the value of a and b
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( 3 + √7)/( 3- √7) + ( 3 -√7)/(3 + √7) =a + b√7
LHS =(3+√7)/(3-√7) +(3-√7)/(3+√7)
={(3+√7)² + (3-√7)²}/(3+√7)(3-√7)
={(2(3² +√7²)/(9-7)
={2(9+7)}/2
=16 = a + b√7
16 + 0.√7 = a + b√7
a = 16
b= 0
LHS =(3+√7)/(3-√7) +(3-√7)/(3+√7)
={(3+√7)² + (3-√7)²}/(3+√7)(3-√7)
={(2(3² +√7²)/(9-7)
={2(9+7)}/2
=16 = a + b√7
16 + 0.√7 = a + b√7
a = 16
b= 0
abhi178:
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