Question

4. Escreva a equação ax? + bx + c = 0
quando:
a) a = 1, b = 6, C = 9
b) a = 4, b = -6, C = 2
c) a = 4, b = 0,C = -25
d) a = -21, b = 7,0 = 0​

Answer 1

Resposta:

a) x+6x+9=0

7x=-9

x=-9/7

b)4x-6x+2=0

-2x=-2

x=1

c) 4x+0-25=0

4x=25

x=25/4

d)-21x+7x+0=0

-14x=0

x=0