Question

SOMEONE PLEASE JUST ANSWER THIS FOR BRAINLIEST!!!

Answer 1

ANSWER

Step 1

EXPLANATION

The given polynomials are:

$( {k}^{2} + 2k - 13) - ( - 3 { k}^{2} + 9k + 1)$

Annie's expansion should have been,

${k}^{2} + 2k - 13+ 3 { k}^{2} - 9k - 1$

But she got:

${k}^{2} + 2k - 13 + 3 { k}^{2} + 9k + 1$

Therefore Annie made an error in the first step.