Identify Common Factors: Look for common factors in the first two terms and the last two terms separately.For the first two terms, 18t3 and −9t2, the common factor is 9t2.For the last two terms, −20t and +10, the common factor is −10.
Factor Out Common Factors: Factor out the common factors from the first two terms and the last two terms.Factoring out 9t2 from 18t3−9t2 gives us 9t2(2t−1).Factoring out −10 from −20t+10 gives us −10(2t−1).
Rewrite Polynomial: Rewrite the polynomial with the factored groups.The polynomial now looks like this: 9t2(2t−1)−10(2t−1).
Factor Out Binomial Factor: Factor out the common binomial factor (2t−1).Both terms have a common binomial factor of (2t−1), so we can factor that out:(2t−1)(9t2−10).
Check Quadratic Factor: Check if the quadratic factor can be factored further.The quadratic factor 9t2−10 does not factor nicely with integer coefficients, so it is left as is.