Question

2 Simplifique as expressões. a) a (a-b)+b (a - b) = b) x (2y+3)+y (-2x+1)=. c) x (x² - xy + y²)+y. (x² - xy + y²)=, d) 4a (3a-2b) + 3b (4a-3b) + 4ab= e) 2x³. (3x + 1)-6x². (x²+3)=​

Answer 1

Resposta:

a) a (a-b)+b (a - b)

$a^{2}-ab+ab-b^{2}\\a^{2}-b^{2}$

b) x (2y+3)+y (-2x+1)

$2xy+3x-2xy+y\\3x+y$

c) x (x² - xy + y²)+y. (x² - xy + y²)

$x^{3} -x^{2} y+xy^{2} +x^{2} y-xy^{2} +y^{3} \\x^{3} +y^{3}$

d) 4a (3a-2b) + 3b (4a-3b) + 4ab

$12a^{2} -8ab+12ab-9b^{2}+4ab \\12a^{2}+8ab -9b^{2}$

e) 2x³. (3x + 1)-6x². (x²+3)

$6x^{4} +2x^{3}-6x^{4}-12x^{2} \\2x^{3} -12x^{2}$

Answer 2

Resposta:

eu não sei essa respostas mais vou ver