Sainik School Entrance Exam 2018 Solved Paper

© examsiri.com

Question : 27 of 150

Marks: +1, -0

(a+1)(a-1)(a^2+1)

is equal to :-

$(a^4-2 a^2-1)$
$(a^4-a^2-1)$
$(a^4+1)$
$(a^4-1)$

Solution:

(d)

(a+1)(a-1)(a^2+1)

=(a^2-1)(a^2+1)

=a^4-1

.

© examsiri.com

Go to Question:

Prev Question

Next Question