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kodarae2501
29.09.2020 •
Mathematics
Solve the equation for x.
2(5x + 3) = 26
Solved
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Ответ:
x=2
Step-by-step explanation:
2(5x+3)=26
Distribute the 2
10x+6=26
Subtract 6 from both sides
10x=20
Divide both sides by 10
x=2
Ответ:
Step-by-step explanation:
cos10A = cos2(5A) = cos²5A - sin²5A = 1 - sin²5A - sin²5A = 1 - 2sin²5A