Ajudem-me por favor???? Obrigada.... Pergunta de ideia dePenhaTop

PenhaTop @PenhaTop

March 2022 1 106 Report

Ajudem-me por favor???? Obrigada

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larissafernandes1 A) ( $x^{2} -2x+3$ ) + ( $-x^{2} + 3x -1$ ) + ( $2x - 5$ )
   $x^{2} -2x + 3 - x^{2} +3x - 1 + 2x -5$
3x - 3

b) ( $- x^{2} +3x -1$ ) - ( $2x - 5$ ) - ( $x + 4$ )
   $- x^{2} +3x-1-2x+5-x-4$
   $- x^{2}$

c) ( $2x - 5$ ) ( $x^{2} -2x +3$ )
   $2 x^{3} - 4 x^{2} +6x - 5 x^{2} +10x -15$
   $2 x^{3} -9 x^{2} +16x - 15$

d) ( $x + 4$ ) ( $2x - 5$ )
   $2 x^{2} -5x+8x - 20$
   $2 x^{2} + 3x - 20$

e) ( $2x-5$ ) $^{2}$
   $4 x^{2} -20x + 25$

f) (x+4) $^{3}$
(x+4) $^{2}$ (x+4)
( $x^{2} +8x+16$ ) (x+4)
$x^{3}+4 x^{2} +8 x^{2} +32x+16x+64$
$x^{3} +12 x^{2} +48x+64$

2 votes Thanks 1

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