Question

check whether 3/5 is zero of the polynomial 5x+21/7​

Answer 1

x=3/5

Putting value of x in given equation

$p(x) = 5x + 21 \div 7|$

p(3/5)=( 5 × ³/5 )+ 3

=(5×3)+3

= 15 + 3

= 18

Hence, p(3/5) is not equal to zero.

Therefore,it is not a zero of polynomial