elsabramasco1161
31.10.2020 •
Mathematics
Factorize the following:9a²-42a+49
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Ответ:
(3a-7)²
Step-by-step explanation:
Sum=-42
Prodect=441
9a²-21a-21a+49
3a(3a-7)-7(3a-7)
(3a-7)(3a-7)
=(3a-7)²
Ответ:
Hao
Step-by-step explanation:
0.57 can be turned into a fraction ( 57/100)