Question

What should be added to 3 X square + 5 X Y + 8 y square to obtain 6 X square + 12 x y

Answer 1

Answer:

-9 xsquare -7 xy - 8 y

Step-by-step explanation:

3 x ^2 +5 xy + 8y

6 x ^2 +12 xy

-           -         -

______________

-9x^2-7xy-8y

_______________

Answer 2

Step-by-step explanation:

Let the number to be k.

A/Q,

(3x² + 5xy + 8y²) +k = 6x²+ 12xy

k = (6x²+ 12xy) - (3x² + 5xy + 8y²)

k = 6x²+ 12xy - 3x² - 5xy - 8y²

k = 3x²+7xy - 8y²

Thus, (3x²+7xy - 8y²) should be added to (3x² + 5xy + 8y²) to obtain (6x²+ 12xy) .

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