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Mathematics 7 Online
OpenStudy (anonymous):

this question asks me to write a cubic equation with its only x-intercept at (4,0),

OpenStudy (anonymous):

I have been substituting in values and was wondering if someone would be willing to walk me through how to do this.

OpenStudy (fibonaccichick666):

I can try

OpenStudy (fibonaccichick666):

so first, what does it mean for a function to be cubic?

OpenStudy (anonymous):

it means that it must be in the form f(x) = ax^3 + bx^2 + cx +d

OpenStudy (fibonaccichick666):

ok good, so if we graph just x^3

OpenStudy (fibonaccichick666):

what part causes us trouble for only having one x-intercept

OpenStudy (fibonaccichick666):

what part of our domain that is?

OpenStudy (anonymous):

sorry that was copied in there!

OpenStudy (fibonaccichick666):

? I don't understand

OpenStudy (anonymous):

sorry, i got the problem and then the computer glitched out, my bad!

OpenStudy (fibonaccichick666):

oh ok

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