Question

Simplify (3x + 1)2 using the square of a binomial formula.

A) x2 + 2x - 1
B) 9x2 + 6x + 1
C) 9x² - 6x-1
D) 9x2 + 2x + 1

Answer 1

B) 9x² + 6x + 1

Explanation:

(3x + 1)^2

(3x + 1) • (3x + 1)

9x² + 3x + 3x + 1

9x² + 6x + 1