SOLUTION: can you expand this: (4z-3)^2

Question 550566: can you expand this: (4z-3)^2
Found 2 solutions by jim_thompson5910, stanbon:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given expression.

Expand. Remember something like .

Now let's FOIL the expression.

Remember, when you FOIL an expression, you follow this procedure:

Multiply the First terms:.

Multiply the Outer terms:.

Multiply the Inner terms:.

Multiply the Last terms:.

---------------------------------------------------
So we have the terms: , , ,

Now add every term listed above to make a single expression.

Now combine like terms.

So FOILs to .

In other words, .

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
expand this: (4z-3)^2
-----
(4z-3)(4z-3)
---
= 4z(4z-3)-3(4z-3)
----
= 16z^2-12z-12z+9
----
= 16z^2-24z+9
=====================
Cheers,
Stan H.
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