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Magazine Problem 46
Multiply. $$3 x(7 x-1)$$
Problem 46
Find the GCF by listing. 80 and 100
Problem 48
Find the GCF using prime factorization. 240 and 150
Problem 49
Find the GCF using prime factorization. 130 and 78
Problem 50
Complete the table. The first row will contain variable expressions. only. To find the sum, add the two given expressions. To find the difference, subtract the second expression from the first. After finding the variable expressions for the sum and difference, evaluate each variable expression using the given values. $$\begin{array}{|r|l|l|l|l} & \text { Expression 1 } & \text { Expression 2 } & \text { Sum } & \text { Difference } \\ \hline y & 2 y^{2}-5 y-3 & 3 y^{2}-5 y+2 & & \\ \hline 5 & & & & \\ \hline-1 & & & & \\ \hline \end{array}$$
Problem 50
Find the GCF using prime factorization. 324 and 270
Problem 51
Find the GCF using prime factorization. 336 and 504
Problem 52
Find the GCF using prime factorization. 270 and 675
Problem 53
Find the GCF using prime factorization. 99 and 140
Problem 55
Find the GCF using prime factorization. \(60,120,\) and 140
