show that (x-5) is a factor of x3-3x2-4x-30 folo m
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Answer:
yes
Step-by-step explanation:
x-5=0 gives x=5
substitue x=5 in x^3-3x^2-4x-30 gives
5^3-3×5^2-4×5-30=125-75-20-30=0
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