Question

HELP DUE TODAY! Determine if the problem is done correctly AND explain your reasoning. If the problem is correct then explain the steps that were taken. If the problem is incorrect then explain what the mistake made was and what the correct solution should be.
1) Multiply the polynomials using the tabular method: (6x2 + 4x – 9)(5x + 1)

Answer 1

Answer:

its correct

Step-by-step explanation:

Answer 2

The problem was done correctly

Each term of 6x^2+4x-9 is placed along the top of the table. Each term of 5x+1 is placed along the right side of the table.

We have 3 terms in 6x^2+4x-9 and 2 terms in 5x+1

So there are 3 columns and 2 rows leading to 3*2 = 6 cells total.

Each cell is filled in by multiplying the outer terms

For instance, row 1, column 1 has 6x^2*5x = (6*5)*(x^2*x) = 30x^3

The other cells are filled in the same way.

After the table is completed, you then combine like terms

20x^2 and 6x^2 is one pair which add to 26x^2

4x and -45x is another pair which add to -41x

The other terms are just added on, but not combined/simplified. This leads to the final answer shown on your paper.