If a3 + 3a2 + 3a = 7, then the value of a2 + 2a is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 3.
Given, a3 + 3a2 + 3a = 7
Put, a = 1 then
(1)3 + 3(1)2 + 3(1) = 7
So, a2 + 2a
⇒ (1)2 + 2(1) = 3
SSC CGL 2024 PYQ — Question 54
SSC CGL - 17 Sep 2024 - Shift 2 • Quantitative Aptitude • Q54