Factor each expression completely:
a. 9x4 − 16x2
b. 2x3 + 5x2 − 8x − 20
c. x3 + 3x2 + 3x + 1
d. 8x3 − 1

a.

By using a² - b² = ( a + b ) ( a - b ),

b.

c.

( by using (a + b)³ = a³ + 3ab(a+b) + b³ )

d.

( by using a³ - b³ = ( a - b ) (a² + ab + b² ) )

answer: 1 and 3

step-by-step explanation:

child does not get an education so she can use the molla on junk