Question

What should be added to (9x2 - 30x) to make it a perfect square ?​

Answer 1

Answer:

What should be added to (9x2 - 30x) to make it a perfect square ?What should be added to (9x2 - 30x) to make it a perfect square ?

Step-by-step explanation:

What should be added to (9x2 - 30x) to make it a perfect square ?

What should be added to (9x2 - 30x) to make it a perfect square ?What should be added to (9x2 - 30x) to make it a perfect square ?What should be added to (9x2 - 30x) to make it a perfect square ?

Answer 2

Answer:

This tells us that the number to be added must be a perfect square. If we add 9, it would have to factor to (3x – 3)2. But this equals 9x2 – 18x + 9, and we need (–30x). Adding 25, we have 9x2 – 30x + 25 = (3x – 5)2.

Step-by-step explanation:

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