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16x^{4}-128x^{3}+344x^{2}-352x+121
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16x^{4}-128x^{3}+344x^{2}-352x+121
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16x^{4}-128x^{3}+344x^{2}-352x+105+16
Use the distributive property to multiply 4x^{2}-16x+7 by 4x^{2}-16x+15 and combine like terms.
16x^{4}-128x^{3}+344x^{2}-352x+121
Add 105 and 16 to get 121.
16x^{4}-128x^{3}+344x^{2}-352x+105+16
Use the distributive property to multiply 4x^{2}-16x+7 by 4x^{2}-16x+15 and combine like terms.
16x^{4}-128x^{3}+344x^{2}-352x+121
Add 105 and 16 to get 121.
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