Question

if P=3x^2+7x+8,Q=2x^2+x-9 and R=-5x^2-8x+1 , show that P+Q+R=O​

Answer 1

Step-by-step explanation:

p+q+r=3x^2+2x^2-5x^2+7x+x-8x+8-9+1

=5x^2-5x^2+8x-8x+9-9

=0....

hence,proved

hope it's helpful.:)

Answer 2

Answer

p+q+r=3x^2+2x^2-5x^2+7x+x-8x+8-9+1

=5x^2-5x^2+8x-8x+9-9

=0....