Question

1)Fazer os exercícios abaixo: a) (4x+3x)= b)(2x+5X)= c)3x+4x+x= d)3(4x-2x)= e)5x(x+3x)= f) 12(15xy-3xy)= g) 8 (5y+4z)= h)4x(2X+3XY)= i) -21AB(15xa+12xy)= j) 3n(n+1)=

Answer 1

a. $(4x + 3x)$

Combine 4x e 3x para obter 7x.

$7x$

b.

$(2x + 5x$

Combine 2x e 5x para obter 7x.

$7x$

c.$3x + 4x + x$

$7x + x$

$8x$

d.$3(4x - 2x)$

$3 \times 2x$

$6x$

e.$5x(x + 3x$

$5x \times 4x$

$20x {}^{2}$

f.$12(15xy - 3xy)$

$12 \times 12xy$

$144xy$

h.$4x(2x + 3xy)$

$4x \times 2x \times 4x \times 3xy$

$8x {}^{2} + 12x {}^{2} y$

I.$21ab \times (15xa + 12xy)$

$315a {}^{2} bx + 252abxy$

j.$3n \times (n + 1)$

$3n \times n + 3n$

$3n {}^{2} 3n$

Espero ter ajudado. Bons estudos.