# How do you solve #4x^4 - 16x^2 + 15 = 0#?

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To solve the equation 4x^4 - 16x^2 + 15 = 0, you can use substitution. Let y = x^2. Then the equation becomes a quadratic equation in terms of y: 4y^2 - 16y + 15 = 0. Factor or use the quadratic formula to solve for y. After finding the values of y, substitute them back into y = x^2 and solve for x to get the solutions.

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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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