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stefanysp
@stefanysp
March 2022
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1) dado os polinômios A 3x² + 2x-4, B 5x-3, C 2x+5 calcule:
A) A+B+C B) AB+BC C) A²-2B
MANDE OS CALCULOS POR FAVOR!!!!!!!!!!! AGRADEÇO A TODOS QUE RESPONDER
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williammendes11
A) A + B + C
(3x² + 2x - 4) + ( 5x - 3) + (2x + 5)
3x² + 9x - 2
b) AB + BC
(3x² + 2x - 4)( 5x - 3) + ( 5x - 3)(2x + 5)
(15x³ +10x² -20x - 9x² - 6x + 12) + (10x² + 25x - 6x - 15)
15x³ + x² - 26x + 12 + 10x² + 19x - 15
15x³ + 11x² - 7x - 3
c) A² - 2B
(3x² + 2x - 4)² - 2( 5x - 3)
9x^4 + 4x² - 16 - (10x - 6)
9x^4 + 4x² -16 -10x + 6
9x^4 + 4x² - 10x -10
4 votes
Thanks 4
stefanysp
obg
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(3x² + 2x - 4) + ( 5x - 3) + (2x + 5)
3x² + 9x - 2
b) AB + BC
(3x² + 2x - 4)( 5x - 3) + ( 5x - 3)(2x + 5)
(15x³ +10x² -20x - 9x² - 6x + 12) + (10x² + 25x - 6x - 15)
15x³ + x² - 26x + 12 + 10x² + 19x - 15
15x³ + 11x² - 7x - 3
c) A² - 2B
(3x² + 2x - 4)² - 2( 5x - 3)
9x^4 + 4x² - 16 - (10x - 6)
9x^4 + 4x² -16 -10x + 6
9x^4 + 4x² - 10x -10