Question

find the value of the polynomials $5x-4x^{2} +3$ at
i)x=0 ii)x= -1 iii) x=2

Answer 1

Answer:

Step-by-step explanation:

i) x = 0

5*0 - 4*0² + 3 = 3

ii) x = -1

5(-1) - 4(-1)² +3 = -5-4+3 = -6

iii) x=2

5(2) - 4(2)² +3 = 10-16+3 = -3

Answer 2

Answer:

Given polynomial 5x − 4x 2 + 3

(i) If x = 0

Then 5(0) − 4(0)2 + 3 = 0 − 0 + 3 = 3

(ii) If x = − 1

Then 5( − 1) − 4( − 1)2 + 3 = − 5 − 4 + 3 = − 6

(iii) If x = 0

Then 5(2) − 4(2)2 + 3 = 10 − 16 + 3 = − 3