Question

49t3 + 20t = -84t2

Answer 1

Get it equal to 0 and factor out t. Then factor the remaining trinomial.

Answer 2

you want all the solutions?

you must solve and turn it into a easier equation.
0 = 49t^3 +84t^2 +20t

and factor t. then wala.. you can solve the other solutions with the quadratic formula.

Answer 3

\[t \left( 49 t^2+84t+20 \right)=0,Either~ t=0~or~49~t^2+84 t+20 =0,\]
find t by quadratic formula or by making factors