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Write a numerical expression for the following items:

1. The square of five plus the square of nine
2. The quotient of sixty and five
3. Twenty less than five times eight
4. The cost of three dozen of eggs at thirty pesos per dozen
5. A third of the sum of seven and eight



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1. 5^{2} +9^{2}=25+81=106
5. \frac{1}{3} *(7+8)= \frac{1}{3} *15= \frac{15}{3} =5
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1.5²+9²                                                                                                                                 2.60÷5=12                                                                                                                            3.(20-5)×8                                                                                                                            4.3×30 pesos                                                                                                                        5.3×(7+8)
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