Maths-
General
Easy

Question

(x2 - 3) – (- 3x2 + 5) Which of the following expressions is equivalent to the one above?

  1. 4 x2 – 8
  2. 4 x2 – 2
  3. - 2x2 – 8
  4. - 2x2 – 2

The correct answer is: 4 x2 – 8


    HINT – Open the brackets
    SOLUTION – The given expression is (x2 - 3) – (- 3 x2 + 5)
    Opening the brackets we get,   x2 –  3 + 3 x2 -  5
    =  4 x2 – 8
    Hence, option A is correct

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