Homework Help: 8th Grade Algebra

Posted by Joy on Monday, March 30, 2009 at 9:34pm.

You know how to solve quadratic equations using algebra, graphs and the quadratic formula. Sometimes one method of solving is more convenient than another method. Describe how you would solve each equation. Give reasons for you answers.

A) 16x^2 = 1600

B) x^2 - 350 = 0

C) x^2 + 10x = 0

I just want to know what you guys think so I have an idea of maybe how to explain my answer.

8th Grade Algebra - bobpursley, Monday, March 30, 2009 at 9:37pm
How I would solve each?
first: take sqrt of each side
second: factor as difference of two squares
third: factor (x(x+10))=0
8th Grade Algebra - Joy, Monday, March 30, 2009 at 11:06pm
Yeah, kinda.
I am asking what is the best way to solve each one by either: algebraically, graphing and using the quadratic formula and why you chose that method.

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