30) Given that
√71 +1
√7+1 7-1-a+bi V7
Find the value of a and b.
Answers
Answered by
1
Step-by-step explanation:
We have to find, the values of a and b are: Solution: ∴ = a + b. Rationalising numerator and denominator, we get. = a + b. Using the algebraic ...
Answered by
4
Step-by-step explanation:
What is the value of a and b if (√7-1/√7+1)-(√7+1/√7-1)=a+b√7?
(√7–1)/(√7+1) - (√7+1)/(√7–1) = a + b√7
=>(√7–1)(√7–1)/(√7+1)(√7–1) -
(√7+1)(√7+1)/(√7–1)(√7+1) = a+b√7
=>(7–2√7+1)/(7–1) - (7+2√7+1)/(7–1) = a+b√7
=> 2(4-√7)/6 - 2(4+√7)/6 = a+b√7
=> (4 -√7 -4 -√7)/3 = a + b√7
=> (-2/3)√7 = a+b√7 => a = 0, b = -2/3.
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