Question

13. The sum of x2-y2, y2-z2, z2-
X2 is

a. 0
b. 3x2

c. 3y2

d. 3z2
2 is square​

Answer 1

Answer:

zero is answer

Step-by-step explanation:

all negative and positive will be cancelled so its answer is zero

Answer 2

The sum of x² - y² , y² - z² , z² - x² is 0

Given :

The expressions x² - y² , y² - z² , z² - x²

To find :

The sum of x² - y² , y² - z² , z² - x² is

a. 0

b. 3x²

c. 3y²

d. 3z²

Solution :

Step 1 of 2 :

Write down the given expressions

The given expressions are

x² - y² , y² - z² , z² - x²

Step 2 of 2 :

Find the sum

The required sum

= ( x² - y² ) + ( y² - z² ) + ( z² - x² )

= x² - y² + y² - z² + z² - x²

= x² - x² + y² - y² + z² - z²

= 0 + 0 + 0

= 0

Hence the correct option is a. 0

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