# How do you evaluate #(b^2-2c^2)/(a+c-b)# given a=12, b=9, c=4?

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To evaluate the expression (b^2 - 2c^2) / (a + c - b) given a = 12, b = 9, and c = 4, substitute the values into the expression:

(9^2 - 2(4)^2) / (12 + 4 - 9)

= (81 - 2*16) / (16 - 9)

= (81 - 32) / 7

= 49 / 7

= 7

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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.

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