Which value of a would make the following expression completely factored?

Mathematics

1 answer:

ehidna [41]3 years ago

7 0

Answer:

Step-by-step explanation:

x^2 - a

If a is a perfect square we could factor

x^2 - b^2 = (x-b)(x+b)

So a cannot be 36,49,81 since they are perfect squares

a must be 12

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