Thursday

March 5, 2015

March 5, 2015

Posted by **jean** on Wednesday, June 18, 2008 at 9:18am.

Factoring each polynomial

x^2+5ax+6a^2

and

solve each equation

a^2+a=20

I am so lost with this one I can not grab how you get a number from this.

thanks for trying who ever you may be

- algebra -
**indu**, Wednesday, June 18, 2008 at 9:30amX^2+5aX+6a^2

splitting the middle term as

X^2+3ax+2aX+6ax^2

------ ---------

take common factor from 2 terms,sequentially as

X(X+3a)+2a(X+3a)

(X+2a) (X+3a) answer is x=-2a ;X=-3a

Question 2: a^2+a-20=0

a^2+5a-4a-20=0

a(a+5)-4(a+5)

(a+5) (a-4)=0

or a=-5 ; +4

both are factorised using splitting the middle term method

**Answer this Question**

**Related Questions**

algebra - how to you solve polynomial equation by factoring x^3 + 3x^2 - 9x = 27

algebra - how do you solve polynomial equation by factoring 3x^4 + 11x^3 = 4x^2

algebra - solve polynomial equation by factoring x^4 +100 = 29x^2

algebra - solve polynomial equation by factoring 2x^3 - 12x^2 = 32x - 192

algebra - Solve the following equation: k2 + 4k = 0 By factoring and By using ...

Algebra 2 - I am trying to factor a 4th degree polynomial that does not have any...

Algebra 1 polynomials - Write the polynomial in descending order by the ...

Algebra. - Help? -Solve Polynomial Equations By factoring. 1. x^6-25x^4=0 2. y^3...

Algebra. - Help? -Solve Polynomial Equations By factoring. 1. x^6-25x^4=0 2. y^3...

Algebra -polynomial - Solve the polynomial 40x^2+2x-65 Notice that for x = 1 the...