SOLUTION: Could you please help me solve these equations: 2x^2-6x+7+7x^3-2x^2+4-3x I got:-9x+11+7x^3 The next one is:(5x^4+2x^3-4)-(2x^3+4x-7) I got:3+5x^4-4x The next one is:(x-2)(2x^2

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Could you please help me solve these equations: 2x^2-6x+7+7x^3-2x^2+4-3x I got:-9x+11+7x^3 The next one is:(5x^4+2x^3-4)-(2x^3+4x-7) I got:3+5x^4-4x The next one is:(x-2)(2x^2      Log On


   

Question 107303: Could you please help me solve these equations:
2x^2-6x+7+7x^3-2x^2+4-3x
I got:-9x+11+7x^3
The next one is:(5x^4+2x^3-4)-(2x^3+4x-7)
I got:3+5x^4-4x
The next one is:(x-2)(2x^2+x-7)
I got:2x^3-3x^2-9x+14
The last one is:12a^4+3a^2/3a^2
I got:4a^2 1 or would it be:+1 on the end?
I want to thank you in advance,you all are so nice for taking the time to help students like me.I never thought I would ever understand algebra,but since I found your site,and with all your help things are getting easier to understand.
Thanks again,jh
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
2x%5E2-6x%2B7%2B7x%5E3-2x%5E2%2B4-3x Start with the given expression

%282x%5E2-2x%5E2%29%2B%28-6x-3x%29%2B%287x%5E3%29%2B%287%2B4%29 Group like terms

-9x%2B7x%5E3%2B11 Combine like terms


So you are correct


%285x%5E4%2B2x%5E3-4%29-%282x%5E3%2B4x-7%29 Start with the given expression


5x%5E4%2B2x%5E3-4-2x%5E3-4x%2B7%29 Distribute the negative


%285x%5E4%29%2B%282x%5E3-2x%5E3%29%2B%28-4x%29%2B%28-4%2B7%29 Group like terms

5x%5E4-4x%2B3 Combine like terms


So you are correct



%28x-2%29%282x%5E2%2Bx-7%29 Start with the given expression


2x%5E3%2Bx%5E2-7x-4x%5E2-2x%2B14 Distribute


%282x%5E3%29%2B%281x%5E2-4x%5E2%29%2B%28-7x-2x%29%2B%2814%29 Group like terms

2x%5E3-3x%5E2-9x%2B14 Combine like terms


So you are correct



%2812a%5E4%2B3a%5E2%29%2F3a%5E2 Start with the given expression


12a%5E4%2F3a%5E2%2B3a%5E2%2F3a%5E2 Break up the fraction


4a%5E2%2B1 Divide

Yes there would be a +1 on the end since there is a '+' in the expression and 3a%5E2%2F3a%5E2 reduces to 1