Question

what should be subtracted from 2 x square minus y square + 4 x square to get X square + y square - z square​

Answer 1

Answer:

(x^2 - 2y^2 + 5z^2)

Step-by-step explanation

Let the number to be subtracted be (p)

According to your question, the equation formed is,

(2x^2 - y^2 + 4z^2) -(p) = (x^2 + y^2 - z^2)

(2x^2 - y^2 + 4z^2) -  (x^2 + y^2 - z^2) = p

2x^2 - y^2 + 4z^2 - x^2 - y^2 + z^2 = p

2x^2 - x^2 - y^2 - y^2 + 4z^2 + z^2 = p

x^2 - 2y^2 + 5z^2 = p

Therefore, your answer is (x^2 - 2y^2 + 5z^2)

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Answer 2

2x²-y²+4x²=6x²-y²

Lets subtract...

6x² -y²

x² +y² -z²

- - +

______________

5x² -2y²+z² (Ans.)

So,We have to subtract 5x²-2y²+z²

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