if a is equal to root of X + 3 + root of X - 3 /root of x+3 - root of X- 3 then 4 ax square - 6 a square is equal to what ? Please tell the answer
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GIVEN : a = √(x + 3) + √(x -3)/ √(x + 3) - √(x - 3)
then, 4ax^2 - 6a^2 = 4 × √((x + 3) + (x - 3))^2/√((x + 3)^2 - (x - 3)^2) - 6 × 2x/6
=> 4 × 2x/√(2x^2 + 18) - 2x
=>
then, 4ax^2 - 6a^2 = 4 × √((x + 3) + (x - 3))^2/√((x + 3)^2 - (x - 3)^2) - 6 × 2x/6
=> 4 × 2x/√(2x^2 + 18) - 2x
=>
ranjitsarma98:
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