Identify GCF: Identify the greatest common factor (GCF) of the terms in the expression.The terms −23x2y3z3 and 21z have a common factor of z.
Factor out GCF: Factor out the GCF from each term in the expression.The GCF z is factored out, resulting in z(−23x2y3z2+21).
Find common factors: Look for any other common factors in the remaining expression inside the parentheses.The terms −23x2y3z2 and 21 do not have any other common factors.
Check for further factorization: Check if the expression inside the parentheses can be factored further.The expression −23x2y3z2+21 is not factorable since 23 is a prime number and does not divide 21.
Write final factored form: Write down the final factored form of the expression.The completely factored form of the expression is z(−23x2y3z2+21).
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