Question

zero of the polynomial 2x²+5x​

Answer 1

p(x)=2x

2

−5x−3

To find zero of polynomial p(x)=0

p(x)=2x

2

−5x−3

p(x)=0

⇒2x

2

−5x−3=0

⇒2x

2

−6x+x−3=0

⇒2x(x−3)+1(x−3)=0

⇒(2x+1)(x−3)=0

x=

2

−1

,3

Answer 2

Step-by-step explanation:

we put 2 at the place of x

then,

p(x) = 2x²+5x

p(2)= 2×2²+5×2

=8+10

=18

so, we say that the value of p(x) at x=2 is 4