How do you use the difference of two squares formula to factor #4x^2 − 81#?
The geeral form for the difference of squares is #a^2-b^2)=(a+b)(a-b)
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To factor 4x^2 - 81 using the difference of two squares formula, first identify that both terms are perfect squares: 4x^2 = (2x)^2 and 81 = 9^2. Then, apply the formula:
a^2 - b^2 = (a + b)(a - b).
So, 4x^2 - 81 can be factored as (2x + 9)(2x - 9).
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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