{5x + 7 ＞ 4 (x-1), 3x-1 of 4 ≤ 5x of 1-4

{5x + 7 ＞ 4 (x-1), 3x-1 of 4 ≤ 5x of 1-4

x＞-11
x≤1
That is - 11 < x ≤ 1

1、 When a is equal to what, the result of the following formula is 0? When a is equal to what, the result of the following formula is 1? (42-6a) divided by 6 (using the solution of the equation)

(42-6a)/6=0 42-6a=0 42=6a a=7 (42-6a)/6=1 42-6a=6 36=6a a=6

Solving the equation by collocation method: in (2x-1) ^ 2 - (4x-1) = 3

(2x-1)^2-(4x-1)=3
4x²-4x+1-4x+1=3
4x²-8x=1
4(x²-2x+1)-4=1
4(x-1)²=5
(x-1)²=5/4
x-1=±√5/2
x=1±√5/2
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