Question

a)(x-1/2)²=0

b)(x-2)²=1

c)(2x-10)³=-8

d)(x+1/2)²=1/16

Answer 1

a. (x-1/2)²=0

=> x-1/2=0

=> x=1/2

b. (x-2)²=1

=> (x-2)²=1²=(-1)²

=> x-2=1             hoặc x-2=-1

=> x=3               hoặc  x=1

c. (2x-10)³=-8

=> (2x-10)³=(-2)³

=> 2x-10=-2

=> 2x=-2+10

=> 2x=8

=> x=8:2

=> x=4

d. (x+1/2)²=1/16

=> (x+1/2)²=(1/4)²=(-1/4)²

=> x+1/2=1/4               hoặc x+1/2=-1/4

=> x=1/4-1/2                hoặc  x=-1/4-1/2

=> x=-1/4                   hoặc x=-3/4

Answer 2

(x - 1/2)² = 0

=> x - 1/2 = 0

x = 1/2

...............Tương tự

Answer 3

a)(x-1/2)^2=0

(x-1/2)^2=0^2

x-1/2=0

x=0+1/2

x=1/2

b)(x-2)^2=1

(x-2)^2=1^2

x-2=1

x=1+2

x=3

c)(2x-10)^3=-8

(2x-10)^3=-2^3

2x-10=-2

2x=-2+10

2x=8

x=8:2

x=4

d)(x+1/2)^2=1/16

(x+1/2)^2=1/4^2

x+1/2=1/4

x=1/4-1/2

x=-1/4

Answer 4

a. (x-1/2)2=0

=> x-1/2=0

=> x=1/2

b. (x-2)2=1

=> (x-2)2=12=(-1)2

=> x-2=1 hoặc x-2=-1

=> x=3 hoặc x=1

c. (2x-10)3=-8

=> (2x-10)3=(-2)3

=> 2x-10=-2

=> 2x=-2+10

=> 2x=8

=> x=8:2

=> x=4

d. (x+1/2)2=1/16

=> (x+1/2)2=(1/4)2=(-1/4)2

=> x+1/2=1/4 hoặc x+1/2=-1/4

=> x=1/4-1/2 hoặc x=-1/4-1/2

=> x=-1/4 hoặc x=-3/4