Expand the following: (4a - b + 2c)?
Answers
Answered by
0
We have,
(4a−b+2c)
2
=(4a)
2
+(−b)
2
+(2c)
2
+2(4a)(−b)+2(−b)(2c)+2(2c)(4a)
[∵a
2
+b
2
+c
2
+2ab+2bc+2ca=(a+b+c)
2
]
=16a
2
+b
2
+4c
2
−8ab−4ac+16ca
Answered by
0
Step-by-step explanation:
We have,
(4a−b+2c)
2
=(4a)
2
+(−b)
2
+(2c)
2
+2(4a)(−b)+2(−b)(2c)+2(2c)(4a)
[∵a
2
+b
2
+c
2
+2ab+2bc+2ca=(a+b+c)
2
]
=16a
2
+b
2
+4c
2
−8ab−4ac+16ca
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