Solving for $t$ in a cubic function

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I have a function $h(t)=5t^3 + 30t^2 + 45t + 4$

I would like to solve for t when $h(t)=50$

I have tried factorizing by inspection and by table but the function does not appear to have a real factorized form. How would I solve a function that does not have a factorized form?

Simplifying:

$50=5t^3 + 30t^2 + 45t + 4$

$46=5t(t^2+6t+9)$