(2a+1/3a)^2 + 2a-1/3a)^2 evaluate
Answers
Answered by
0
Answer:
8a^2 + 2/9a^2
Step-by-step explanation:
(2a + 1/3a)^2 + (2a - 1/3a)^2
= (2a + 1/3a + 2a - 1/3a)^2 - 2 x (2a + 1/3a) x (2a - 1/3a)
= (4a)^2 - 2 x {(2a)^2 - (1/3a)^2}
= 16a^2 - 2 x (4a^2 - 1/9a^2)
= 16a^2 - 8a^2 + 2/9a^2
= 8a^2 + 2/9a^2
Similar questions