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Find the zero of the function. state the multiple zero . y=9x^3 -9x

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Factor out the GCF of 9x first. 9x(x^2-1)=0; 9x(x+1)(x-1)=0; set each factor equal to zero. x=0, x=-1,. x=1 each has a multiplicity of one.
User Shaun Neal
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