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23-07-2017
Mathematics

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Expand the equation (2x+3)^4

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froffiek froffiek

23-07-2017

(2x+3)(2x+3)(2x+3)(2x+3)
(4x^2+12x+9)(4x^2+12x+9)
16x^4+48x^3+36x^2+48x^3+144x^2+108x+36x^2+108x+81
16x^4+(48+48)x^3+(36+144+36)x^2+(108+108)x+81

ans: 16x^4+96x^3+216x^2+216x+81

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