Answer:
Step-by-step explanation:
p(A) = a^3 + 3a^2 + 9a + 27
put brackets around the 1st and second terms and another set around the 3rd and 4th
P(a)= (a^3 + 3a^2) + (9a + 27)
Using the distributive property, pull out the common factor for each of the 2 terms that contain the brackets.
P(a) = a^2 ( a + 3) + 9(a + 3)
Let a + 3 = x
P(a) = a^2x + 9x
Put brackets around these 2 terms
P(a)= x(a^2 + 9)
Substitute a + 3 for x
P(a) = (a + 3) ( a^2 + 9)
Answer:
x < 9
Step-by-step explanation:
Distribute 4
4x -20 < 16
add 20 to both sides
4x<36
divide by 4
x<9
5/12 is the answer just do 15 and then add 15 + 21 to get 36 and then you reduce 15/36 and get 5/12
