Question

2) Add the polynomial 8x²+5x-2 to x²-2x+7
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Answer 1

Answer:

You will understand and answer by own only..

Horizontal addition works fine for simple polynomials. But when you were adding plain old numbers, you didn't generally try to apply horizontal addition to adding numbers like 432 and 246; instead, you would stack the numbers vertically, one on top of the other, and then add down the columns (doing "carries", as necessary):

\small{ \begin{array}{r}432\\+246\\ \hline 678\end{array} }

432

+246

678

You can do the same thing with polynomials. Here's how the above simplification exercise looks, when it is done "vertically"

Simplify (2x + 5y) + (3x – 2y)

I'll put each variable in its own column; in this case, the first column will be the x-column, and the second column will be the y-column:

\small{ \begin{array}{rr}2x&+5y\\3x&-2y\\ \hline 5x&+3y\end{array} }

2x

3x

5x

+5y

−2y

+3y

I get the same solution vertically as I got horizontally.

5x + 3y

Answer 2

Step-by-step explanation:

Given polynomials are 8x²+5x-2 and x²-2x+7

On adding them ,then

(8x²+5x-2 )+( x²-2x+7)

=>8x²+5x-2 + x²-2x+7

=>(8x²+x²)+(5x-2x)+(-2+7)

=>9x²+3x+5

Sum of the given two polynomials is 9x²+3x+5