Question

if (x-3) is one factor of x²+ax -4=0 and then find the value of a.​

Answer 1

Answer:

a = -5/3

Step-by-step explanation:

f (x)= x2+ax-4

then,

f (x-3)=f (3) because x-3=0 and x will be equal to 3.

f (3)=3 power 2 plus 3 × a minus 4=0

=9+3a-4=0

=5+3a=0

=3a = -5

=a = -5/3

I hope the answer is correct and it will help u