Sunday

December 21, 2014

December 21, 2014

Posted by **anonymos NEEDS HELP!** on Thursday, August 21, 2008 at 11:33am.

1. x2-5x+7=0

2. (3x-4)=(4x-3)2

- quadratic equations - math -
**Count Iblis**, Thursday, August 21, 2008 at 11:58am1. This is already in standard form. You should be able solve that equation from what you've learned.

2. Here it is convenient to substitute.

y = 4x-3

Then

x = 1/4(y+3) -------->

3x - 4 = 3/4 (y+3) -4 =

3/4 y - 7/4

So, the equation is:

3/4 y - 7/4 = y^2 -------->

4 y^2 - 3 y + 7= 0

**Answer this Question**

**Related Questions**

Algebra2 - Find the polynomials roots to each of the following problems: #1) x^2...

math - Still looking at how to solve these... Both are cubic polynomials? 43x^3...

Math - Algebra - A. Solve the following quadratic equations. Make sure to show ...

Alg II - I'm working with finding roots of polynomial equations with degrees of ...

Alg II - I'm working with finding roots of polynomial equations with degrees of ...

8th Grade Algebra - You know how to solve quadratic equations using algebra, ...

algebra - 1 Solve the set of linear equations by the matrix method : a+3b+2c=3...

How do I do this.?(Math.) - Use the Substitution method to solve the system of ...

Math - Determine for what value(s) of d the quadratic equation 5x^2-10x+d = 0 ...

math - please anwer these: 1) how can i multiply and divide polynomials ...