Solving Quadratics by Factoring and Graphing

Thompsonnn · 2017-08-27 05:37:34

t+8 t-3

zetafunc · 2017-08-27 07:07:23

The quadratic equation has solutions and This is because when you replace with into the equation, you get:

Similarly:

So when we plug and into the left-hand side of , we get -- which means that they satisfy the equation. So we can call them solutions.

Does that make sense?

Thompsonnn · 2017-08-28 01:24:57

yes it does thank you!

zetafunc · 2017-08-28 06:47:42

Great! But remember to discard one of the solutions, since time cannot be negative.

Thompsonnn · 2017-08-28 19:29:23

do i do number 20 the same?

zetafunc · 2017-08-31 08:51:33

It can probably be done in a similar way -- let us know if you have any problems.

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