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eksdeeexe
08.12.2021 •
Mathematics
1: Mệnh đề là gì?
a) Mệnh đề là một khẳng định có chân lý xác định đúng hoặc sai.
b) Mệnh đề là một câu hỏi có chân lý xác định
c) Mệnh đề là một khẳng định sai
d) Mệnh đề là một khẳng định vừa đúng vừa sai
Solved
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Ответ:
Lets Simplify Step by Step:
5(2x + 1) - 4
Distribute:
(5)(2x) + (5)(1) + -4
10x + 5 + -4
Combine Like Terms:
10x + 5 + -4
(10x) + (5 + -4)
10x + 1
Hence, Letter Choice, (C); 10x + 1 ===> 5(2x + 1) - 4
CHECK:
5(2x + 1) - 4 > 10x + 1 ===> True for all x ===> Both Sides Equal.
Steps:
5(2x + 1 ) - 4 = 10x + 1
Expand:
5(2x + 1 ) - 4 > 10x + 1
10x + 1 > 10x + 1
Subtract 1 from both sides:
10x + 1 - 1 > 10x + 1 - 1
Simplify:
10x = 10x
Subtract 10x form both sides:
10x - 10x = 10x - 10x
Simplify:
0 = 0
Therefore, when checked, 5(2x + 1 ) - 4 ===> 10x + 1, Which makes Both Sides Equal; True for All " x "
Have a great day : )