Answer:
"5x+15" is an expression equivalent to "5(x+3)".
Explanation:
If we expand this factorization, the resulting expression is equivalent to the original expression. This is how you expand it:
1. Write the expression.
2. Apply the distributive property of multiplication.
Check the attached image.
3. Conclude.
5x+15 is an expression equivalent to 5(x+3).