Question

equasao 2° grau

m) x+5x+6=0
n) x-7x+12=0
o) x+5x+4=0
p) x+3x-28=0
q) x-6x+9=0
r) 2x=15-x​

Answer 1

Resposta:

M) x = 0 -5 -6

[x= 1 ]

n) x -7x = 0 -12

6x = 12

x= 12 ~ [x = 2]

6

o) x+ 5x = 0 - 4

6x = 4

x =4

6

p) x + 3x= 0 + 28

4x = 28

x =28 ~ [ x = 7]

4

q) x - 6x = 0 - 9

5x= 9

x = 9

5

r) 2x + x =15

3x = 15

x = 15 ~ [ x = 5 ]

3