a squared = 3x-25a, and 2x=2(a-3)
I took Algebra last year. I remember these.
They are called Systems of Equations, I believe. You have to either use Substituition, something-else-I-can't-remember, or graph it. That's because there are two variables.
I THINK I know how to Substitute. Like I said, I took Algebra 1 last year. I'm in Geometry right now, so I haven't really had to apply much more than basic Algebra this year.
Uhm... I'm trying to job my memory here. D: Think Katie. We did these. I remember loving Subsituting. It was so much fun.
I LOVE Algebra. I love numbers, and words. I fail at Geometry - I hate diagrams and shapes.
Okay, ANYWAY -
Oh! The-something-I-don't-remember had to do with cancelling things out.
Ahaha! I did a quick Google search to jog my memory. The three ways to solve Systems of Equations are Graphing, Subsitiution, and Elimination.
Graphing = fail. Don't graph. You can do that for very elementary equation systems. If you don't have a nice integer, it doesn't work. And it's much harder to do.
In Subsitution, the idea is to find out one of the variables first, and then plug it in to find the other one.
Elimination is the one my Algebra teacher pushed. It's where you look for things in common between the two equations, and cancel things out.
Here's a link to a GREAT little site that can help you learn how to do these: https://www.scribd.com/doc/3215442/Algebra-...ms-of-Equations
These are advanced Algebra 1 problems - we didn't get to them until April or May of last year. They may even fall into Algebra 2 in some cases.
I'm not going to solve them for you - what good what that do you? And besides, I'm lazy and it would take me a while to remember how to exactly solve them. -fail-
For the second equation:
I got the same thing as Celestia and tama_crazy did. You have to use the Distributive Property and distribute the '2'.
I should be in Algebra 2 this year. D8< I was recommended to take Algebra 1 in 7th grade, but my parents wouldn't let me take it. They said I wasn't capable. I'll never let them live it down. [/rant]
EDIT: Whoops. Typo.