1) yessenia simplified an expression as shown below: given: x + 6 + 3(x + 4) step 1: x + 9(x + 4) step 2: x + 9x + 36 step 3: 10x + 36 in which step did yessenia make a mistake? what should she have done instead? your answer cannot exceed 75 words.

The mistake is done in step 1.

Correct answer is

Step-by-step explanation:

Given : Yessenia simplified an expression

Step 1 -

Step 2 -

Step 3 -

To find : In which step did Yessenia make a mistake? What should she have done instead?

Solution :

The mistake is done in step 1.

As she cannot add 6 and 3 because 3 is in multiple with (x+4).

The correct steps are,

Given :

Step 1 - Multiply 3 under bracket,

Step 2 - Add like terms,

Therefore, The required result is

a² + b²= c²

24² + 7² = c²

c= 25