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24-16x
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24-16x
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16-16x+4x^{2}-4\left(x^{2}-2\right)
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(4-2x\right)^{2}.
16-16x+4x^{2}-4x^{2}+8
Use the distributive property to multiply -4 by x^{2}-2.
16-16x+8
Combine 4x^{2} and -4x^{2} to get 0.
24-16x
Add 16 and 8 to get 24.
16-16x+4x^{2}-4\left(x^{2}-2\right)
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(4-2x\right)^{2}.
16-16x+4x^{2}-4x^{2}+8
Use the distributive property to multiply -4 by x^{2}-2.
16-16x+8
Combine 4x^{2} and -4x^{2} to get 0.
24-16x
Add 16 and 8 to get 24.
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Limits
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