expand (3x-2)(3x+2) — step-by-step solution

Let's expand:

(3 x - 2) \cdot (3 x + 2)

3 \cdot x \cdot 3 \cdot x

+ 3 x \cdot 2

- 2 \cdot 3 x

- 2 \cdot 2

ℹ

3 \cdot 3

9

‖

x \cdot x

x^{2}

‖

3 \cdot 2

6

‖

2 \cdot 3

6

‖

-2 \cdot 2

-4

9 x^{2}

+ 6 x

- 6 x

- 4

ℹ

6 x - 6 x

0

9 x^{2} + 0 - 4

▷Result: $9 x^{2} - 4$