Simplify the expression: t3 x t5

I can’t make the 3 or 5 small but they are supposed to be like smaller numbers, I think t to the power of 3 for example

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

Ineed someone to me answer my question i have to have this done and knocked out