Question

Correct the error made in factoring the trinomal.​

Answer 1

Answer:

The last step is incorrect.

Step-by-step explanation:

5(x² + 9) should be the last step.

The answerer mistakened (x² + 9) for a "difference of squares". You can se the difference of squares factoring when you have a square number being subtracted from another square number. The general rule looks like:

$a^{2} - b^{2} = (a+b)(a-b)$

"Difference" means the answer when subtracting, but there is a plus sign "+" which means adding.

You can't factor "x² + 9" any further.