Fill in the Blanks with a Pair of Numbers That $\underline { 8 } \cdot \underline { 5 }= 40$

Essay

Fill in the blanks with a pair of numbers that has the indicated product and the indicated sum. For example, $\underline { 8 } \cdot \underline { 5 }= 40$ and $\underline { 8 } + \underline { 5 } = 13$ . $- \cdot - = 45$ and $- ^ { + } - = 14$