Question

Exercícios 1) Efetue os seguintes polinômios:
a) (x²- 5x + 3) + (- 4x²- 2x - 7) =
b) (5x²- 2ax + a²) + (- 3x² + 2ax - a²) =​

Answer 1

a) (x²- 5x + 3) + (- 4x²- 2x - 7) =

x²- 5x + 3- 4x²- 2x - 7

-3x²-7x-4

b) (5x²- 2ax + a²) + (- 3x² + 2ax - a²) =

5x²- 2ax + a²- 3x² + 2ax - a²

2x²

❤️❤️ Prontinho

29/10/21

Answer 2

$</p><p>Como \: resolver \: esse \: problema \: </p><p></p><p> veja \\ </p><p>(2−5+3)+(−42−2−7)</p><p></p><p>(x^{2}-5x+3)+(-4x^{2}-2x-7)(x2−5x+3)+(−4x2−2x−7)</p><p> \\ </p><p>1 \: Simplifique \\ </p><p></p><p></p><p>Elimine os parênteses</p><p> \\ </p><p>(2−5+3)+(−42−2−7)</p><p></p><p>(x^{2}-5x+3)+(-4x^{2}-2x-7)(x2−5x+3)+(−4x2−2x−7)</p><p></p><p>2−5+3−42−2−7</p><p></p><p>x^{2}-5x+3-4x^{2}-2x-7x2−5x+3−4x2−2x−7 </p><p> \\ </p><p>2 \: Resolva a subtração</p><p> \\ </p><p>2−5+3−42−2−7</p><p></p><p>x^{2}-5x+{\color{#c92786}{3}}-4x^{2}-2x{\color{#c92786}{-7}}x2−5x+3−4x2−2x−7</p><p></p><p>2−5−4−42−2</p><p></p><p>x^{2}-5x{\color{#c92786}{-4}}-4x^{2}-2xx2−5x−4−4x2−2x</p><p> \\ </p><p>3 \: Combine os termos semelhantes</p><p> \\ </p><p>2−5−4−42−2</p><p></p><p>{\color{#c92786}{x^{2}}}-5x-4{\color{#c92786}{-4x^{2}}}-2xx2−5x−4−4x2−2x</p><p></p><p>−32−5−4−2</p><p></p><p>{\color{#c92786}{-3x^{2}}}-5x-4-2x−3x2−5x−4−2x</p><p> \\ </p><p>4 \: Combine os termos semelhantes \\ </p><p>−32−5−4−2</p><p></p><p>-3x^{2}{\color{#c92786}{-5x}}-4{\color{#c92786}{-2x}}−3x2−5x−4−2x</p><p></p><p>−32−7−4</p><p></p><p>-3x^{2}{\color{#c92786}{-7x}}-4−3x2−7x−4</p><p> \\ </p><p>Solução</p><p> \\ </p><p>−32−7−4</p><p></p><p>$