SOLUTION: Can someone help me with these? I am having a to ugh time with this. I do appreciate anyone who can help. 1. Simplify: 4[a – b(2 + 3a)] – 3a[2+b(4 – a)] 2. Simplify: (7x2 – 2

Algebra ->  Exponents -> SOLUTION: Can someone help me with these? I am having a to ugh time with this. I do appreciate anyone who can help. 1. Simplify: 4[a – b(2 + 3a)] – 3a[2+b(4 – a)] 2. Simplify: (7x2 – 2      Log On


   

Question 205000: Can someone help me with these? I am having a to ugh time with this. I do appreciate anyone who can help.
1. Simplify: 4[a – b(2 + 3a)] – 3a[2+b(4 – a)]
2. Simplify: (7x2 – 2y + z) + (3y – z) + (4x2 – 6y)

Found 2 solutions by Alan3354, MathTherapy:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
1. Simplify: 4[a – b(2 + 3a)] – 3a[2+b(4 – a)]
Work from the inside out. Eliminate parentheses.
4[a – b(2 + 3a)] – 3a[2+b(4 – a)]
= 4[a - 2b - 3ab] - 3a[2 + 4b - ab]
= 4a - 8b - 12ab - 6a - 12b + 3a^2b
Then combine terms
= -2a - 20b - 12ab + 3a^2b
----------------
2. Simplify: (7x2 – 2y + z) + (3y – z) + (4x2 – 6y)
Just remove the parentheses and combine terms.
7x2 – 2y + z + 3y – z + 4x2 – 6y
= 11x^2 -5y

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

1. Simplify: 4[a – b(2 + 3a)] – 3a[2+b(4 – a)]
4[a - b(2 + 3a)] - 3a[2 + b(4 - a)]

Remove the parentheses by distributing. This gives us:

4[a - 2b - 3ab] - 3a[2 + 4b - ab]

4a+-+8b+-+12ab+-+6a+-+12ab+%2B+3a%5E2b

Combine like terms: highlight_green%28-2a+-+8b+-+24ab+%2B+3a%5E2b%29


2. Simplify: (7x2 – 2y + z) + (3y – z) + (4x2 – 6y)
%287x%5E2+-+2y+%2B+z%29+%2B+%283y+-+z%29+%2B+%284x%5E2+-+6y%29
Remove parentheses: 7x%5E2+-+2y+%2B+z+%2B+3y+-+z+%2B+4x%5E2+-+6y
Combine like terms: highlight_green%2811x%5E2+-+5y%29