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MHT CET202020 Oct 2020Evening ShiftMathematicsTrigonometric Ratios & IdentitiesActual

A+ 7 A+ 13 A A+ 7 A+ 13 A =

Options

  1. A7 A
  2. B6 A
  3. C7 A
  4. D6 A

Correct answer

C. 7 A

Step-by-step solution

aligned A+ 7 A+ 13 A A+ 7 A+ 13 A &= ( A+ 13 A)+ 7 A ( A+ 13 A)+ 7 A &= 2 7 A 6 A+ 7 A 2 7 A 6 A+ 7 A &= 7 A(2 6 A+1) 7 A(2 6 A+1) &= 7 A aligned

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