(t^2-9t)^2+22(t^2-9t)+112

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To solve this, we can expand the expression using the distributive property:

((t^2 - 9t)^2 + 22(t^2 - 9t) + 112)
= (t^4 - 18t^3 + 81t^2 + 22t^2 - 198t + 112)
= t^4 - 18t^3 + 103t^2 - 198t + 112

Therefore, the expanded expression is t^4 - 18t^3 + 103t^2 - 198t + 112.