What is the HCF of x^3-25x,
x^2 + 2x - 15 ?
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Step-by-step explanation:
f(x) = x(x²-25)
=x(x²-5²)
=x(x+5)(x-5)
g(x) = x²+5x-3x-15
=x(x+5)-3(x+5)
=(x+5)(x-3)
hcf (f(x), g(x)) = (x+5)
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