Question

find the sum of P (x) = 3 X²+ 4 x- 3 x ³ + 1 and q (x)= X ² + 3 X + 1​

Answer 1

Answer:

P (x) +  q (x)= (3 x²+ 4 x- 3 x ³ + 1) + ( x ² + 3 x + 1​) =- 3 x ³  + 4 x ²+ 7 x + 2

Step-by-step explanation:

Find the sum of P (x) = 3x²+ 4 x- 3 x ³ + 1 and q (x)= Xx² + 3 X + 1​

P (x) +  q (x)= (3 x²+ 4 x- 3 x ³ + 1) + ( x ² + 3 x + 1​)

Remove bracket

=  3 x²+ 4 x- 3 x ³ + 1  +   x ² + 3 x + 1​

Rearrange similar terms

=  - 3 x ³  + 3 x²+   x ²+ 4 x   + 3 x + 1​ + 1

=- 3 x ³  + (3 +1) x ²+ (4 + 3) x + (1​ + 1)

=- 3 x ³  + 4 x ²+ 7 x + 2

So,  P (x) +  q (x)=- 3 x ³  + 4 x ²+ 7 x + 2