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Magazine Problem 239
For the following exercises, find the \(x\) - or \(t\) -intercepts of the polynomial functions. $$ f(x)=2 x^{3}-x^{2}-8 x+4 $$
Problem 240
For the following exercises, find the \(x\) - or \(t\) -intercepts of the polynomial functions. $$ f(x)=x^{6}-7 x^{3}-8 $$
Problem 241
For the following exercises, find the \(x\) - or \(t\) -intercepts of the polynomial functions. $$ f(x)=2 x^{4}+6 x^{2}-8 $$
Problem 242
For the following exercises, find the \(x\) - or \(t\) -intercepts of the polynomial functions. $$ f(x)=x^{3}-3 x^{2}-x+3 $$
Problem 243
For the following exercises, find the \(x\) - or \(t\) -intercepts of the polynomial functions. $$ f(x)=x^{6}-2 x^{4}-3 x^{2} $$
Problem 244
For the following exercises, find the \(x\) - or \(t\) -intercepts of the polynomial functions. $$ f(x)=x^{6}-3 x^{4}-4 x^{2} $$
Problem 245
For the following exercises, find the \(x\) - or \(t\) -intercepts of the polynomial functions. $$ f(x)=x^{5}-5 x^{3}+4 x $$
Problem 246
For the following exercises, use the Intermediate Value Theorem to confirm that the given polynomial has at least one zero within the given interval. $$ f(x)=x^{3}-9 x, \quad \text { between } x=-4 \text { and } x=-2 $$
Problem 247
For the following exercises, use the Intermediate Value Theorem to confirm that the given polynomial has at least one zero within the given interval. $$ f(x)=x^{3}-9 x, \quad \text { between } x=2 \text { and } x=4 $$
Problem 248
For the following exercises, use the Intermediate Value Theorem to confirm that the given polynomial has at least one zero within the given interval. $$ f(x)=x^{5}-2 x, \quad \text { between } x=1 \text { and } x=2 $$
