Question

find a and b in the following
*show steps

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Answer 1

Answer:

1. a = 8 , b = 3

2. a = 2 , b = -5/6

Step-by-step explanation:

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See The Attachment My Friend....

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Answer 2

Answer:

Step-by-step explanation:

(I)  3+ROOT 7/ 3-ROOT7 =A + B ROOT 7

  MULTIPLYING LHS BY 3 + ROOT 7 , WE GET

  (3 + ROOT 7)(3 + ROOT 7) / (3 - ROOT 7)(3 + ROOT 7)

= 9 + 6 ROOT 7 + 7 / 9 - 7                ( ON APPLYING [A+B]^2 = A^2+B^2+2AB]                            IN NUMERATOR AND (A-B)(A+B)=A^2 - B^2 IN DENOMINATOR )

= 16 + 6 ROOT 7 / 2

= 8 + 3 ROOT 7         ( ON DIVIDING BY 2)

 NOW, ON COMPARING THE RESULT WITH A + B ROOT 7

WE GET,

A = 8

B = 3

THANK YOU........................