Identify Common Factors: Look for common factors in each pair of terms. We can pair the first two terms and the last two terms to look for common factors.
Factor First Pair: Factor out the greatest common factor from the first pair of terms.The greatest common factor of 20y3 and 10y2 is 10y2.20y3−10y2=10y2(2y−1)
Factor Second Pair: Factor out the greatest common factor from the second pair of terms.The greatest common factor of 6y and −3 is 3.6y−3=3(2y−1)
Write Factored Expression: Write the expression with the factored pairs.20y3−10y2+6y−3=10y2(2y−1)+3(2y−1)
Factor Common Binomial: Factor out the common binomial factor.Both terms have a common factor of (2y−1).20y3−10y2+6y−3=(10y2+3)(2y−1)