Question 4 Given f (20) = 5, find x if f(x) = -3x – 4
-3
-19
O 11
O 12
help

f=4 x=3

Step-by-step explanation:

f(20)=5 then f= 20/5=4 if f(x) -3×(-4) then x= 12/f (f=4) then 12/4= 3

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).