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AP EAMCET202018 Sep 2020Morning ShiftMathematicsTrigonometric Ratios & IdentitiesActual

If (4 x+3 x=5 ), then find the value of ( x= )

Options

  1. A( 3 4 )
  2. B( 4 3 )
  3. C( -3 4 )
  4. D( -4 3 )

Correct answer

A. ( 3 4 )

Step-by-step solution

Given, (4 x+3 x=5 ) ( 4+3 x=5 x ) On squaring both sides, we get ( array rlrl & 16+9 ^2 x+24 x & =25 ^2 x & 16 ^2 x-24 x+9 & =0 (4 x-3)^2=0 x & = 3 4 array )

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