SOLUTION: Write the quadratic in general form: 1)3/5(3x^2-10)=12x 2)13-3(x+7)^2=0 3)X(x+2)=5x^2+1

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Write the quadratic in general form: 1)3/5(3x^2-10)=12x 2)13-3(x+7)^2=0 3)X(x+2)=5x^2+1      Log On


   

Question 960593: Write the quadratic in general form:
1)3/5(3x^2-10)=12x
2)13-3(x+7)^2=0
3)X(x+2)=5x^2+1
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

a quadratic in general form: y+=+ax%5E2+%2B+bx+%2B+c
or +ax%5E2+%2B+bx+%2B+c=0
1)
%283%2F5%29%283x%5E2-10%29=12x
%283%2F5%29%283x%5E2-10%29-12x=0
%289%2F5%29x%5E2-12x-30%2F5=0
%289%2F5%29x%5E2-12x-600

2)
13-3%28x%2B7%29%5E2=0
13-3%28x%5E2%2B14x%2B49%29=0
13-3x%5E2-52x-147=0
0=-13%2B3x%5E2%2B52x%2B147
0=3x%5E2%2B52x%2B134 or
3x%5E2%2B52x%2B134=0

3)
x%28x%2B2%29=5x%5E2%2B1
x%5E2%2B2x=5x%5E2%2B1
0=5x%5E2-x%5E2-2x%2B1
0=4x%5E2-2x%2B1
4x%5E2-2x%2B1=0