Question

2abc-a2-b from b2+a2-2abc​

Answer 1

Step-by-step explanation:

According to this question we have to subtract the number here,

☞b²+a²-2abc-(2abc-a²-b)

☞b²+a²-2abc-2abc+a²+b

☞b²+b+2a²-4abc=0

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Answer 2

Answer:

Step-by-step explanation:

For addition:

                       2abc - a2 - b

               +).   -2abc + a2 +0 + b2

Answer=        -b+b2 (cancellation of 2abc and -2abc, -a2 and a2)

For subtraction: ( from has been used in the question)

                   b2 + a2 - 2abc

         -).      0.   - a2 + 2abc -b ( changing the sign of down numbers=(-,+,-,+)

Answer=   b2 + a4 -0 +b

overall = b2 + a4 + b