What is 1 61/100 in expanded form

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b