Question

5. Add the following expressions : x³+11x²+6x+15;2x³-4x²+13x-8​

Answer 1

Answer:

4x3−7x2+9,3x2−5x+4,7x3−11x+1,6x2−13x 

On adding the expressions, we have 

= 4x3−7x2+9+3x2−5x+4+7x3−112+1+6x2−13x 

= 4x2+7x3−7x2+3x2+6x2+5x−11x−13x+9+4+1 

= 11x3−2x2−29x+14 

Answer 2

Step-by-step explanation:

4x

3

−7x

2

+9,3x

2

−5x+4,7x

3

−11x+1,6x

2

−13x

On adding the expressions, we have

= 4x

3

−7x

2

+9+3x

2

−5x+4+7x

3

−11

2

+1+6x

2

−13x

= 4x

2

+7x

3

−7x

2

+3x

2

+6x

2

+5x−11x−13x+9+4+1

= 11x

3

−2x

2

−29x+14

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