How to use the discriminant to find out how many real number roots an equation has for #-x^2 - 2x - 7 = -6#?
Julia AdamsYou don't need to find D. Use shortcut. Since a - b + c = 0, one real
Note: y is a perfect square polynomial
y = -(x + 1)^2 --> double root --> x = -1
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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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