jai6313 jai6313

30-08-2018
Mathematics

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×^2+4x-5/×^2+7x+1
[tex] \frac{ {x}^{2} + 4x + - 5 } {x {}^{2} + 7x + 1 }^ { } { } [/tex]

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30-08-2018

(4x2 – 4x – 7)(x + 3)

(4x2 – 4x – 7)(x) + (4x2 – 4x – 7)(3)

4x2(x) – 4x(x) – 7(x) + 4x2(3) – 4x(3) – 7(3)

4x3 – 4x2 – 7x + 12x2 – 12x – 21

4x3 – 4x2 + 12x2 – 7x – 12x – 21

4x3 + 8x2 – 19x – 21

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