Calcule:
(x-3) . (x+1) . (x+5)=
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boa tarde !!!!
![(x - 3) \times (x + 1) \times (x + 5) \\ \\ (x {}^{2} + x - 3x - 3) \times (x + 5) \\ \\ (x {}^{2} - 2x - 3) \times (x + 5) \\ \\ x {}^{3} + 5x {}^{2} - 2x {}^{2} - 10x - 3x - 15 \\ \\ = x {}^{3} + 3x {}^{2} - 13x - 15 (x - 3) \times (x + 1) \times (x + 5) \\ \\ (x {}^{2} + x - 3x - 3) \times (x + 5) \\ \\ (x {}^{2} - 2x - 3) \times (x + 5) \\ \\ x {}^{3} + 5x {}^{2} - 2x {}^{2} - 10x - 3x - 15 \\ \\ = x {}^{3} + 3x {}^{2} - 13x - 15](https://tex.z-dn.net/?f=%28x+-+3%29+%5Ctimes+%28x+%2B+1%29+%5Ctimes+%28x+%2B+5%29+%5C%5C++%5C%5C+%28x+%7B%7D%5E%7B2%7D++%2B+x+-+3x+-+3%29+%5Ctimes+%28x++%2B+5%29+%5C%5C++%5C%5C+%28x+%7B%7D%5E%7B2%7D++-+2x+-+3%29+%5Ctimes+%28x+%2B+5%29+%5C%5C++%5C%5C+x+%7B%7D%5E%7B3%7D++%2B+5x+%7B%7D%5E%7B2%7D++-+2x+%7B%7D%5E%7B2%7D++-+10x+-+3x+-+15+%5C%5C++%5C%5C++%3D+x+%7B%7D%5E%7B3%7D++%2B+3x+%7B%7D%5E%7B2%7D++-+13x+-+15)
espero que eu tenha conseguido te ajudar..
espero que eu tenha conseguido te ajudar..
jujupagio:
Mto obrigada!!
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