Verified answer

a) (x + 3)² = 49

x + 3 = 7

x = 4

x + 3 = -7

x = -10

b) (8 - x)² = 1

8 - x = 1

x = 7

8 - x = -1

x = 9

c) (5x - 4)² = 9

5x - 4 = 3

5x = 7

x = 7/5

5x - 4 = -3

5x = 1

x = 1/5

pronto

a) (x+3)²=49

x²+9 =49

x²=49-9

x²=40

x=raíz quadrada 40.

b) (8-x)²=1

64-x²=1

x²=1-64

x²=-63X(-1)

x²=63

x=raíz 63

c) (5x-4)²=9

25x-16=9

25x=9+16

25x=25

x=25/25

x=1

( x + 3)² = 7² extraindo a raiz quadrada

x + 3 = 7

x = 7 - 3

x = 4 *******

b

(8-x)² = 1² ( idem acima)

8 - x = 1

- x = 1 - 8

-x = -7

x = 7 *****

c

( 5x - 4)² = 3²

5x - 4 = 3

5x = 3 + 4

5x = 7

x = 7/5 ******