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Question

# If z = xy-yx then, match the following column.

A
3 2
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B
32
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C
0.0
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D
83
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Solution

## Here, given as z = xy-yx i.) If x = -6 and y = 3 here putting the value of x & y, we get z = −63-36 ⇒ z = −63-36 = 2 - 12=−3 2 ii.) If x = 5 and y = -10 here putting the value of x & y, we get z = 5−10-10−5 ⇒ z = -12+21 = 2 - 12= 32 iii.) If x = -4 and y = -4 here putting the value of x & y, we get z = −4−4 - −4−4 ⇒ z = 1- 1 = 0 iv.) If x = 3 and y = 9 here putting the value of x & y, we get z = 39 - 93 ⇒ z = 39-93 =13-31=−8 3

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