Explain, Teach me. Im clueless.

Question

umarsback · Answer

Solve the equation by graphing. x2 - 5x - 24 = 0

anonymous · Answer

What exactly do you need to solve for?

anonymous · Answer

zeros?

umarsback · Answer

They're choices..

       {4, 6}
       {-2, 12}
       {-4, 6}
       {-3, 8}

anonymous · Answer

Okay, so you're trying to solve for the zeros of the equation. As this is parabolic, the function will cross two points on the x axis. You can solve by graphing on wolframalpha.com, or by factoring the equation

anonymous · Answer

You can see that the equation is equal to (x+3)*(x-8)

anonymous · Answer

foil it out if you you can't see it

anonymous · Answer

with (x+3)*(x-8) = 0, only one of the two products has to be zero, so the zeros are -3 and 8

amistre64 · Answer

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x1 and x2 are where the graph of the curve intersect the x axis