SOLUTION: [3+(4b-1)]^2 the answer is 16b^2+32b+16 i need to see the steps to understand how to get this.

Question 318668: [3+(4b-1)]^2
the answer is 16b^2+32b+16
i need to see the steps to understand how to get this.
Found 2 solutions by Fombitz, solver91311:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Use the FOIL method,

.
.
.
Your answer can't be correct, when b=0, you should get but instead you'd get .
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Just use FOIL like any other binomial expansion -- it is just that one of the terms is a binomial itself.

First:

Outside:

Inside:

Last:

And you have to apply FOIL again:

First

Outside:

Inside:

Last:

Putting the second application of FOIL together:

and adding this to the First, Outside, and Inside of the first application of FOIL:

Then collect like terms:

The answer is definitely NOT

So it is not possible for your problem to have the same answer.

John

RELATED QUESTIONS
I need help solving [3+(4b+1)]^2 I know what the answer should be, 16b^2+32b+16 but I... (answered by checkley71)
Rearrange the following equation to ﬁnd x in terms of a and b, in simplest form... (answered by oscargut)
can you please help me factor this 2a^2-8b^2+16b-8 I get the following... (answered by KojackDavis)
Here is the problem: (4a^2b^3)^-2 (2ab^-1)^3/(a^3b)^-4 The steps I use are:... (answered by josgarithmetic)
Need to be shown the steps to solve this problem.. I was told the answer is -67/19 but I (answered by Alan3354)
Need to be shown the steps to solve this problem.. I was told the answer is -67/19 but I (answered by Alan3354)
I need help dividing these. We need to use long division. I just need the answers to... (answered by vleith)
Find the quotient 25a^2-16b^2�5a-4b I strugging with this problem. I have no idea of... (answered by MathLover1)
Please help with the following: (16b^-2)^-1/2 Solution: b/4 When I work this... (answered by ewatrrr)