Identify GCF: Identify the greatest common factor (GCF) of the terms in the expression 12−3x10. The GCF of 12 and 3x10 is 3.
Factor out GCF: Factor out the GCF from the expression.The expression 12−3x10 can be written as 3(4)−3(x10).Factoring out the GCF, we get 3(4−x10).
Recognize difference of squares: Recognize that the expression inside the parentheses is a difference of squares.The expression 4−x10 can be written as (22)−(x5)2, which is a difference of squares.
Apply formula: Apply the difference of squares formula.The difference of squares formula is a2−b2=(a+b)(a−b).Using this formula, we can factor 4−x10 as (2+x5)(2−x5).
Write final factored form: Write the final factored form of the original expression. Combining the GCF with the factored form of the difference of squares, we get the final factored form: 3(2+x5)(2−x5).