The expression 18t + 9 is factorized as 9(2t + 1) by factoring out the common factor 9. The factored form is 9 times the expression 2t + 1.
To factorize the expression 18t + 9, you can factor out the common factor from both terms. The greatest common factor (GCF) for 18t and 9 is 9. Therefore, you factor out 9:
18t + 9 = 9(2t + 1)
Here's the step-by-step process:
1. Recognize that 9 is a common factor of both 18t and 9.
2. Factor out 9 from each term:

3. Write the remaining expressions in parentheses:(2t + 1.
The factored form 9(2t + 1) is equivalent to the original expression 18t + 9. This form makes it clear that 9 is a common factor, and the remaining expression 2t + 1 represents the other factor.
So, 18t + 9 can be factorized as 9(2t + 1).
The probable question may be:
Fill in the gaps to factorise this expression.. 18t+9=9(_ +_ )