What is the factored form of 4z2 – 24z + 36?

Question

anonymous · Answer

Find the Greatest Common Factor (GCF)

anonymous · Answer

the GCF is 4

skullpatrol · Answer

That^ is the factor that is common to all the terms :-)

anonymous · Answer

Factor out the GCF

4(4z^2/4+-24z/4+36/4)

Simplify

anonymous · Answer

You have to Simplify each term in parentheses 
4(z^2-6z +9)

anonymous · Answer

z^2-6z +9 fits the form a^2−2ab+b^2
Simplify using the identity

jack1 · Answer

@skullpatrol no fair if it's off the screen  ;)

skullpatrol · Answer

:D

anonymous · Answer

4(z^2 - 2(z)(3) + 3^2)

anonymous · Answer

Use Square of Difference and simplify

bananas1234 · Answer

ok

bananas1234 · Answer

sorry my computer froze.

bananas1234 · Answer

i am back now, so would that equal (2z + 6)(2z – 6)?

anonymous · Answer

Nope, it's (a-)^2
which is = 4 (z-3)^2

bananas1234 · Answer

oh ok

bananas1234 · Answer

my options are: 
(2z + 6)2

       (2z – 6)2

       (2z + 6)(2z – 6)

       4(z + 6)(z – 6)

bananas1234 · Answer

im still a bit confused @Jack1

jack1 · Answer

none of ur answers fit the equation then, the only right ones are 
4(z-3)(z-3)
or
4(z-3)^2
or
(4z-12)(z-3)
which are all just different ways of writing what nando's wrote above hey... sorry  :(