(8d+4)–(d+2) Subtract
2 answers:
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Answer:
Step-by-step explanation:
Suppose, on the contrary, a and b are both odd integers, that is:
m and n being some integers numbers.
This way you have to:
The last expression cannot be divisible by 4 since 2 is not divisible by 4. The previous conclusion leads to a contradiction, which was generated from the assumption that a and b were both odd integers. In conclusion, at least one of the two a and b should be an even integer