Question

What should be added to 3x^2 –7x+9 to get 5x ^2 -7?

Answer 1

Answer:

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Step-by-step explanation:

Let be added to 3x² + 4 to get 9x² - 7.

Then, y + 3x² + 4 = 9x² - 7

⇒y=9x² -7-3x² - 4

⇒y=9x²-3x²-7-4

⇒y=6x² 11

Hence, the required answer is 6x² - 11.

Answer 2

Answer:

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