Question

a) (x + 3)2 = 25
b) (x + 7)2 - 4 = 45
c) (x - 4)2 + 3 = 18
d) (x - 5)2 + x-8 = x + 19

Resuelvan las siguientes ecuaciones ​

Answer 1

a. (x + 3)2 = 25

2x+6=25

2x=25-6

2x=19

x=19/2

x=9,5

b. (x + 7)2 - 4 = 45

2x+14-4=45

2x+10=45

2x=45-10

2x=35

x=35/2

x=17,5

c. (x - 4)2 + 3 = 18

2x-8+3=18

2x-5=18

2x=18+5

2x=23

x=23/2

x=11,5

d. (x - 5)2 + x-8 = x + 19

2x-10+x-8=x+19

3x-18=x+19

3x-x=19+18

2x=37

x=37/2

x=18,5