Question

(vi) The value of f(x) = 5x−4x2+3 when x = -1, is:

a. 3

b. -12

c. -6

d. 6

​

Answer 1

Answer:

6

Step-by-step explanation:

first these equation write in order

then , we get

-4x^2+5x+3=0

0=4x^2-5x-3

- should be not there in front of highest degree

4(-1)^2-5(-1 )-3. ( :x=-1 )

4+5-3=9-3

=6

Answer 2

Answer:

6

Step-by-step explanation: