Thursday

December 18, 2014

December 18, 2014

Posted by **Unknown** on Monday, August 20, 2012 at 7:19pm.

Quadratic Equations ;

1. 4y^4+9=13y^2

2. x-3x 1/2+2=0

3. (x-5)^2+2(x-5)-35=0

4. (x-2)^2-3(x-2)+2=0

5. 2(x^2-5) - 13(x^2-5)+20=0

6. 2x 2/3 + 5 1/3=12

7.6x 2/3 -5x 1/3-6=0

8.x^-2 + 4x^-1=12

9.x^4-8x^2+7=0

10.x^4-2x^2-35=0

- Algebra. -
**Steve**, Monday, August 20, 2012 at 10:20pm#1: work with y^2

4(y^2)^2 - 13y^2 + 9 = 0

(y^2 - 1)(4y^2 - 9) = 0

so, y^2 = 1 or 9/4

y = ±1 or ±3/2

#5: group things up

(2-13)(x^2 - 5) = -20

-11(x^2-5) = -20

x^2-5 = 20/11

x^2 = 75/11

x = ±√(75/11) = ±5√(3/11) or ±5/11 √33

#6,7: work with x^1/3 as we did with y^2 in #1.

do the others in like manner. If you get stuck, come on back for further help.

**Answer this Question**

**Related Questions**

Algebra. - Help PleaseDx ? Quadratic Equations ; 1. 4y^4+9=13y^2 2. x-3x 1/2+2=0...

Algebra2 - Help PleaseDx ? Quadratic Equations ; 1. 4y^4+9=13y^2 2. x-3x 1/2+2=0...

MATH- Algebra 2 - Solve each quadratic in form equation. 1. 4y^4+9=13y^2 2. x-3x...

Algebra Quadratic Equations - I am trying to define the different appraoches to ...

algebra - does 13x^2+13y+8x^2 collect like terms =21x^2+13y

Algebra (Quadratic Equations) - Is the point (-3, -2) a solution of the ...

Algebra - Solving systems of linear equations in 3 variables... 1) 3x-2y+2z=1 2...

Algebra 2 (Quadratic Equations) - Is the point (-3, -2) a solution of the ...

Algebra - How can you tell if an equation is quadratic and not linear? Quadratic...

Math - Solve each quadratic in form equation. 1. 4y^4+9=13y^2 2. x-3x^1/22=0 3...