Question

1- Reduza os termos semelhantes

a) 2x+3x²+6x-8-3=

b) x+3x+x+x²-8+2x=

c) 2a+3x+x²-8+2x=

d) x+x+y-y+y-x=

e) 2a+a²+5-8a-6a²-5=

2- Calcule

a) (-6a):(-3a)=

b) (-5x²):(-2x)=

c) (-9a)•(-3a³)=

d) (8x)•(-2x³)=

e) -6x•(+4x elevado a sexta potência)​

Answer 1

a) 2x+3x²+6x-8-3=

$(2 + 6)x = 8x$

$- 8 - 3 = - 11$

$= 8x + 3 {x}^{2} + 11$

b) x+3x+x+x²-8+2x=

$(3 + 1 + 2 + 1)x = 7x$

$7x + {x}^{2} + - 8$

c) 2a+3x+x²-8+2x=

$(3 + 2)x = 5x$

$2a + 5x + {x}^{2} + - 8$

d) x+x+y-y+y-x=

$(1 + 1 - 1)x = 1x$

$(1 - 1 + 1)y = 1y$

$xy$

e) 2a+a²+5-8a-6a²-5=

$(2 + 8)a = 10a$

$(1 - 6) {a}^{2} = 5 {a}^{2}$

$10a + 5 {a}^{2}$

a) (-6a):(-3a)=

$2a$

b) (-5x²):(-2x)

$2 {x}^{5}$

c) (-9a)•(-3a³)

$3 {a}^{10}$

d) (8x)•(-2x³)=

$- 4 {x}^{10}$