Answer:
value of a is -3.33
or in fraction -10/3
Step-by-step explanation:
If -3 is the root of P(x)
then
P(-3) = 0
then we substitute -3 in place of x in the given equation
P (x) = x³ + 4x² - ax + 1
P (-3) = -3³ + 4*-3² - a(-3) + 1
=> 0 = -27 + 36 + 3a + 1
=> 0 = 10 + 3a
=> 3a = -10
=> a = -10/3 = -3.33
Thus, value of a is -3.33
