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Question

Solve for x:x2x4+x6x8=623

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Solution

x2x4+x6x8=203

3(x2)(x8)+3(x6)(x4)=20(x4)(x8)

3x230x+48+3x230x+72=20x2240x+640

6x260x+120=20x2240x+640

14x2+180x520=0

x=180±18024(14)(520)2(14)

x=45±2057

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