3. If $(x)=-3p? – 3x3 + 2x² + 3x, which of the following statements is true? O x = 0 is a root of f(x) 2 times
O x = 0 is a root of f(x) 3 times
O x = 0 is a root of f(x) 4 times
O x = 0 is not a root of f(x)
O x = 0 is a root of f(x) 1 time

the answer is the third / last answer

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

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step-by-step explanation: