How do you evaluate #x^2+2x-1# when #x=2#?
Eva AbramsonSo, #x^2-2x-1 = (2)^2+2(2)-1 = 4+4-1 = 7#
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Kennedy AdamsTo evaluate ( x^2 + 2x - 1 ) when ( x = 2 ), substitute ( x = 2 ) into the expression:
( 2^2 + 2 \times 2 - 1 )
which equals
( 4 + 4 - 1 = 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.
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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