can you please help me with this

Algebra
Tutor: None Selected Time limit: 1 Day

Find the value of c that will make the expression a perfect square trinomial. 1. x^2 + 0.6x + c A. 0.3 B. 0.36 C. 0.9 D. 0.09
Feb 22nd, 2015

Please note that we have:

x^2 + 0.6 x = x^2 +  2 * 3/10 x

So we get a perfect square if we add 9/100, since:

x^2 + 2 * 3/10 x + 9/100 = (x + 3/10)^2

so your answer is option D.

Feb 22nd, 2015

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