anonymous one year ago 2t^2+5t+?=0 How can i get the 3rd term?

1. Astrophysics

You can complete the square

2. phi

the third term could be anything (unless we have more info) if we assume this equation is in standard form, the third term would be a number (with no "t" variable) for example, it could be 0, 1, 2, or pi , etc

3. phi

if we know the expression is a "perfect square" then we would do as astro suggests.

4. Astrophysics

So if you have $x^2+ax=0$ we can do the following $x^2+\frac{ 2ax }{ 2 } + \left( \frac{ a }{ 2 } \right)^2-\left( \frac{ a }{ 2 } \right)^2=0$ (complete the square)

5. anonymous

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