Question

a)x^2+x+1/4

b)x^2-3x+9/4

c)x^2/4+x+1

d)x^2/4-1/2x+1/4

Answer 1

a: \(=\left(x+\dfrac{1}{2}\right)^2\)

b: \(=\left(x-\dfrac{3}{2}\right)^2\)

c: \(=\left(\dfrac{1}{2}x+1\right)^2\)

d: \(=\left(\dfrac{1}{2}x-\dfrac{1}{2}\right)^2\)

Answer 2

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

`@ : HĐT` số `1`

`x^2 - 3x + 9/4 = (x-3/2)^2`

`@ : HĐT` số `2`

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

`@ : HĐT` số `1`

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

`@ : HĐT` số `2`