Question

write the coefficient of x cube and explain the following polynomial 3x4-x2+2x2-5​

Answer 1

coefficient of x3 is 0.

3x4-x2+2x2-5=0

3x2+x2-5=0

x (3x+x)-5=0

(x-5)(3x+x)=0

x=5

x=0