Question
Simplify these expressions and find their values, If x = 3, a = -1, b = -2.
(i) 3x - 5 - x + 9
(i) 3x - 5 - x + 9
✓
Answer
(i) We have, 3x - 5 - x + 9 = 3x - x - 5 + 9
= x(3 - 1) + 4
= 2x + 4
On putting x = 3 ln 2x + 4 we get
2x + 4 = 2(3) + 4
= 6 + 4 = 10
Hence, the simplified expression is 2x + 4 and its required value is 10.
= x(3 - 1) + 4
= 2x + 4
On putting x = 3 ln 2x + 4 we get
2x + 4 = 2(3) + 4
= 6 + 4 = 10
Hence, the simplified expression is 2x + 4 and its required value is 10.
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