# data[].attributes.body
x^2-18x+81
x^2=x*x
9*9=81
9+9=18
(x-9)(x-9)

# data[].attributes.body
(x-9)^2

# data[].attributes.body
x^2-18x+81
x*x=x²
9*9=81
(x-9)(x-9)

# data[].attributes.body
( x + 9 ) ( x - 9 )

# data[].attributes.body
(x-9)(x-9)

# data[].attributes.body
(x - 9)^2

# data[].attributes.body
x^2 - 18x + 81
(x-9)^2

# data[].attributes.body
x*x= x^2
81= 9^12
(x-9) (x-9)

# data[].attributes.body
(x-9)(x+9)

# data[].attributes.body
(x-9) (x-9)

# data[].attributes.body
(x-9)(x-9)

# data[].attributes.body
x^2:x*x
9*9=81
(x-9)(x-9)

# data[].attributes.body
(x-9)(x-9)

x*x    x*-9
-9*x   -9*-9

x^2-9x-9x+81
x^2-18x+81

# data[].attributes.body
X2 - 18X + 81
x*x=x^2
9*9=81
(x-9)(x-9)

# data[].attributes.body
X ² - 18X + 81
9*9=81
9+9=18
x*x=x^2
(x-9)(x-9)
X^2-9x-9x+81
X^2-18x+81

# data[].attributes.body
x^2 - 18x + 81
x * x = x^2
9 * 9 = 81
(x - 9) (x - 9)

# data[].attributes.body
-9*-9 = 81
-9+-9 = -18
(x-9)(x-9)

# data[].attributes.body
x^2-18x+81
x^2=x*x
81=9*9
(x-9)(x-9)

# data[].attributes.body
x^2: x*x
81: 9*9
= (x-9)(x-9)
check:
x^2-9x-9x+81
x^2-18x+81

# data[].attributes.body
x^2-18x+81
x^2-2*x*9+9
(x-9)(x+9)

# data[].attributes.body
x^2-18x+81
x^2=x *x
81=9*9
(x-9)(x-9)

# data[].attributes.headline
Factor the following PERFECT SQUARE TRINOMIAL 

# data[].attributes.subject
Factor the following PERFECT SQUARE TRINOMIAL 

# data[].attributes.body
X ² - 18X + 81