SOLUTION: Hi can you help me with these 4 questions I'd apperceate it! 1- what is te value of x in the equation 13x-2(x+4)=8x+10 2- the sum of 3x^2+4x-2 and x^2-5x+3 is... 3- the expres

Algebra ->  Test -> SOLUTION: Hi can you help me with these 4 questions I'd apperceate it! 1- what is te value of x in the equation 13x-2(x+4)=8x+10 2- the sum of 3x^2+4x-2 and x^2-5x+3 is... 3- the expres      Log On


   

Question 741517: Hi can you help me with these 4 questions I'd apperceate it!
1- what is te value of x in the equation 13x-2(x+4)=8x+10
2- the sum of
3x^2+4x-2 and x^2-5x+3 is...
3- the expression
(3x^2+2xy+7)-(6x-4xy+3) is equivalent to
4- the expression
(x^2-5x-2)-(-6x^2-7x-3) is equivalent to...
Thanks please help me out by tomorrow please show steps to thanks
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

1- what is te value of x in the equation 13x-2%28x%2B4%29=8x%2B10
13x-2%28x%2B4%29=8x%2B10..first multiply -2%28x%2B4%29
13x-2%2Ax%2B%28-2%29%2A4=8x%2B10
13x-2x-8=8x%2B10
11x-8=8x%2B10....add -8x to the both sides
11x-8-8x=8x-8x%2B10
3x-8=10...add 8 to the both sides
3x-8%2B8=10%2B8
3x=18
x=18%2F3
highlight%28x=6%29

2- the sum of
3x%5E2%2B4x-2 and x%5E2-5x%2B3 is...
3x%5E2%2B4x-2%2Bx%5E2-5x%2B3...rearrange, put like terms next to each other
3x%5E2%2Bx%5E2%2B4x-5x%2B3-2
highlight%284x%5E2-x%2B1%29


3- the expression
%283x%5E2%2B2xy%2B7%29-%286x-4xy%2B3%29 is equivalent to


4- the expression
+%28x%5E2-5x-2%29-%28-6x%5E2-7x-3%29 is equivalent to...

%28x%5E2-5x-2%29-%28-6x%5E2-7x-3%29+=x%5E2-5x-2%2B6x%5E2%2B7x%2B3

%28x%5E2-5x-2%29-%28-6x%5E2-7x-3%29+=highlight%287x%5E2%2B2x%2B1%29