Question

Simplify (x+3)^2 - 6x

Answer 1

Answer:

${x}^{2} + 9$

Step-by-step explanation:

${(x + 3)}^{2} - 6x \\ \\ = {x}^{2} + {3}^{2} + 2 \times x \times 3 - 6x \\ \\ = {x}^{2} + 9 + 6x - 6x \\ \\ = {x}^{2} + 9$

Answer 2

Answer:

The answer is x² + 9.

Step-by-step explanation:

First, you have to get rid of bracket of square :

${(a + b)}^{2} \: ⇒ \: {a}^{2} + 2ab + {b}^{2}$

${(x + 3)}^{2}$

$= (x + 3)(x + 3)$

$= {x}^{2} + 6x + 9$

Next, you can simplify :

${x}^{2} + 6x + 9 - 6x$

$= {x}^{2} + 9$