Question

a) 9a + 4 = 3a + 8

b) 2y = 10

c) x

2 + 2x + 1 = 0

d) b + 4 = 29​

Answer 1

Resposta:

Explicação passo-a-passo:

a) 9a - 3a = 8 - 4

6a = 4

a = 2/3

b) 2y = 10

y = 10/2

y = 5

c) x² + 2x + 1 =0

delta = 2² - 4 = 0

x = -2/2 = -1

d) b = 29 - 4

b = 25

Answer 2

A)9a+4=3a+8

9a-3a=8-4

6a=4

a=4/6

a=0,66.

B)2y=10

Y=10/2

Y=5.

C)x.2+2x+1=0

2x+2x=-1

4x=-1

X=-1/-4

X=0,25

D)b+4=29

b=29-4

b=25.