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Please explain in detail how to solve this problem:

h = -16t^2 + 156t + 105

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If h = -16t^2 + 156t + 105 = 0

then

When you see list of results click on:

When page be open in rectangle type:

16t^2 + 156t + 105 = 0

and click option: solve it!

You wil see solution step-by-step

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