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Write a numerical expression for the following items:

1.The quotient of fifteen and five subtracted from the product of fifteen and five
2. Twice Annie’s age plus ten
3. Nine more than thrice Romy’s age
4. One half of thirty
5. The square of the sum of ten and eight


1. (15/5)-(15*5) *this is the numerical expression*
    evaluating the expression: 3-45=-42 (if needed)
2. let x be Annie's age. so, 
   = 2x+10 
3. let x be Romy's age
   = 3x+9 or 3(x+3)
4. 30/2 or simply 15
5. (10+8)² 
if you need an answer for this: 10²+2*8*10+8²
                                      = 100+160+64
                                      = 324.
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