Question

If x = -y and y > 0, which of the following is wrong?

2 points

xy < 0

x + y = 0

1/x --1/y=0

x2y > 0​

Answer 1

Answer:

The correct option is (d).

Given:

x = −y and y > 0

Now, we have:

(i) x2y

On substituting x = −y, we get:

(−y)2y = y3 > 0 (∵ y > 0)

This is true.

(ii) x + y

On substituting x = −y, we get:

(−y) + y = 0

This is also true.

(iii) xy

On substituting x = −y, we get:

(−y) y = −y2 < 0 (∵ y > 0)

This is again true.

(iv)

On substituting x = −y, we get:

Hence, from the above equation, we get y = 0, which is wrong.

Answer 2

⭐Option (C) ⭐

Option (c) is correct; if we add a positive and a negative integer, may be zero or positive integers obtained, therefore, the statement (c) is false.

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