Question

find the value of polynomial 5x-4x^2+3 at x=2 and x=-1​

Answer 1

Step-by-step explanation:

p(x)= 5x-4x²+3

p(-1) = 5(-1)-4(-1)²+3

= -5-4+3

= -9+3

= -6

p(2)= 5(2)-4(2)²+3

= 10 -16+3

= 13-16

= -3

Answer 2

You should do it ....


Answer —


Plug x = - 1 we get
=>5x – 4x2 + 3
=>5(-1) – 4(-1)2 + 3
=> -5 – 4 +3
=>-6


Plug x = 2 we get
=>5(2) – 4(2)2 + 3
=>10 – 16 + 3
=> -3

See the image