Question

If P = 3x2 +7 x +8, Q = 2x² + x - 9 and R = -5x² – 8x+1, show that P + Q + R =0 .​

Answer 1

3x^2 + 7x + 8 =p

2x^2 + x - 9 =Q

-5x^2 - 8x + 1 =R

by adding in horizantal so p+q+r =0