Question

Find the value of the polynomial 5x-4x²+3 at
x=0, x= -1, x=2​

Answer 1

Step-by-step explanation:

if x=o

so, p(0)=3

if x=-1

so, p(-1)=5×-1-4×-1²+3=-5-4+3=-6

ifx=2

so, p(2)=5×2-4×2²+3=10-16+3=-3

is correct

Answer 2

Answer:

5x 4x² + 3

( i ) On putting x=0 ,

p(0) = 5(0) – 4(0)² + 3

= 0 – 0 + 3 =3

= 3

( i i ) On putting x= -1,

p(-1) = 5(-1) – 4(-1)²+ 3

= -5 – 4(1) + 3

= -5 – 4 + 3= -9 + 3= -6

= -6

( i i i ) On putting x=2

p(2) = 5(2) – 4(2)² + 3

= 10 – 16 + 3 = -6 + 3

= -3

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