plz find the solution of
(a+b)^2 - (a-b)^2=
Answers
Answered by
0
Answer:
= 4ab
Step-by-step explanation:
Correct option is
D
4ab
Given, (a+b)
2
−(a−b)
2
.
We know, (a+b)
2
=a
2
+b
2
+2ab
and (a−b)
2
a
2
+b
2
−2ab.
Then,
(a+b)
2
−(a−b)
2
=a
2
+b
2
+2ab−(a
2
+b
2
−2ab)
=a
2
+b
2
+2ab−a
2
−b
2
+2ab
=4ab.
Therefore, option D is correct.
Answered by
1
Answer:
4ab
Step-by-step explanation:
(a+b)^2 - (a-b)^2
= a^2 + b^2 + 2ab - { a^2 + b^2 - 2ab}
= 2ab + 2ab
= 4ab
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