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Question

Find the value of A+B+C if :

A=(7xy+5yz3zx)
B=(4yz+9zx4y)
C=(3xz+5x2xy)



A

5xy+3zx+5x4y

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B

5xy+9yz+3zx+4y

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C

5xy+9yz+2zx+5x4y

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D

5xy+9yz+3zx+5x4y

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Solution

The correct option is D

5xy+9yz+3zx+5x4y


Given:
A=(7xy+5yz3zx)
B=(4yz+9zx4y)
C=(3xz+5x2xy)

To find the value of A+B+C 
we write the expressions one below the other with the like terms appearing exactly below like terms as:

  7xy+5yz3zx
             4yz+9zx4y
2xy          3xz        +5x
__________________________
  5xy+9yz+3xz4y+5x

Thus, A+B+C=5xy+9yz+3xz+5x4y.                      


Mathematics

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