I have no idea how my teacher got her answers.


label Algebra
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solve the equation by factoring:   25x^2+30x+8=0

Nov 19th, 2017

25x^2+30x+8=0 

(4+5x)(2+5x)=0 --- Set equation up as a trinomial 

Now solve each equation. 

4+5x=0 

5x=0-4 --- Divide each side by 5 to get rid of the x 

x = -0.8 

2+5x=0 

5x=0-2  --- Divide each side by 5 to get rid of the x 

x = -0.4 

Answers (-0.8, -0.4) 




Nov 10th, 2014

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