Question

(a + b + c)2= a + b2​

Answer 1

Step-by-step explanation:

(a+b+c)² = a+b²

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Answer 2

Answer:

-a/2=c

Step-by-step explanation:

• (a+b+c) 2=a+b2
• 2a+2b+2c=a+2b
• 2a-a+2b-2b=-2c
• a=-2c
• -a/2=c