Maths-
General
Easy
Question
(x2 - 3) – (- 3x2 + 5) Which of the following expressions is equivalent to the one above?
- 4 x2 – 8
- 4 x2 – 2
- - 2x2 – 8
- - 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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