(x3)^2
(3x1)^2
(3x1)^2

(x  3)^2 (a – b)² = a² – 2ab + b²
= (x)² – 2(x)(3) + (–3)²
= x² – 6x + 9
(3x  1)^2
= (3x)² – 2(3x)(1) + (–1)²
= 9x² – 6x + 1

= (x)² – 2(x)(3) + (–3)²
= x² – 6x + 9
(3x  1)^2
= (3x)² – 2(3x)(1) + (–1)²
= 9x² – 6x + 1


(x  3)^2 = x^2  6x + 9
(3x  1)^2 = 9x^2  6x + 1
(3x  1)^2 = 9x^2  6x + 1