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#1 2010-01-13 09:09:36
- Will Hale
- Guest
Simplifying
hey, i'm stuck with some simplifying questions and I have a big test soon.
The questions are simplify and expand 5 ( x+ 3 )
and also simplify and expand 7 ( 2x - 4 )
I was will the week we did these at school, can someone explain?
#2 2010-01-13 10:14:30
- Identity
- Member
- Registered: 2007-04-18
- Posts: 934
Re: Simplifying
For any numbers a,b,c
a(b+c) = a*b+a*c
Applying that formula,
5(x+3) = 5*x+5*3 = 5x+15
7(2x-4) = 7*2x+7*(-4) = 14x-28
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