Question

fatorar as seguintes expressões completamente!!!!

A) x(elevado a 2) + 5x

B) 2y(elevado a 2) + 3y

C) 6c(elevado a 2) - 21c

D) x(elevado 2) - 6x

E) 6y(elevado a 2) - 4y

F) 15x - 9x(elevado a 2)

G) 7x - x(elevado a 2)

H) 3x(elevado a 2) -21x

Answer 1

a)11x - 13 = 64

11x = 64 + 13

11x = 77

x = 7

b) 17x + 50 = 7x

17x - 7x = - 50

10x = - 50

x = -50/10

x= -5

c)13x - 12 = 9x + 16

13x - 9x = 16 + 12

4x = 28

x = 28/4

x = 7

d)5.(x + 2) -2.(3x - 1) = 13

5x + 10 - 6x + 2 = 13

-x + 12 = 13

- x = 13 - 12

- x = 1 .(-1)

x= -1

e) 7.( 2 + x ) = 35 + 5.( x - 1,2 )

14 + 7x = 35 + 5x - 6

7x - 5x = 29 - 7 

2x = 22

x= 22/2

x = 11

h)3(x+1)-2(x-1)=-(x+5)

3x + 3 - 2x +2 = - x - 5

x + x = - 5 - 3 - 2

2x = -10

x= -10/2

x= - 5