Asked by Ariana

find the real zeros of each polynomial

f(x)=5x^3-40

Please show work I want to learn how to did it
Answered by Steve
well, note that

f(x) = 5(x^3-2^3) = 5(x-2)(x^2+2x+4)

That help?
Answered by Ariana
so what's the correct answer Steve?
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