SOLUTION: I need to factor 4h squared minus 56

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Question 427988: I need to factor 4h squared minus 56
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
set it equal to 0

4h^2 - 56 = 0

divide both sides of the equation by 4 to get:

h^2 - 14 = 0

add 14 to both sides of the equation to get:

h^2 = 14

take square root of both sides of the equation to get:

h = +/- sqrt(14)

the completely factored expression would be:

4 * (h-sqrt(14)) * (h+sqrt(14))

setting the exspression equal to 0 allows you to find the roots.

a graph of your equation is shown below:

graph%28600%2C600%2C-10%2C10%2C-70%2C70%2C4x%5E2-56%29

the equation that is graphed is y = 4*x^2 + 56

h is changed to x so that graphing software can handle it.

graph crosses the x-axis at +/= 3.74 which is equivalent to +/= sqrt(14).