A.) 6x + 2

B.) 9x² + 1

C.) 9x² + 3x + 1

D.) 3x² + 1

E.) 9x² + 6x + 1

= (3x + 1)(3x + 1) {when squaring a binomial, multiply it by itself}

= 3x(3x) + 3x(1) + 1(3x) + 1(1) {used foil method}

= 9x² + 3x + 3x+ 1 {multiplied through}

=

**9x² + 6x + 1**{combined like terms}

**E.)**

*- Algebra House*