x2 / y = (6)2 /2 = 36/2 = 18
x = 21. 2 /7 = 6/x cross multiply, and you will see that 2x = 42 therefore, x must equal 21.
x = -6 x/-3 + 5 = 7 x/-3 = 2 x = -6
12
2x + 4 = 6/x - 3 ∴2x - 6/x + 7 = 0 ∴2x2 + 7x - 6 = 0 X ∈ {0.71221447, -4.2122145}
(x+2)/5 = 6+x x+2 = 30+5x x-5x = 30-2 -4x = 28 x = -7
x = 188
x = 21. 2 /7 = 6/x cross multiply, and you will see that 2x = 42 therefore, x must equal 21.
x = -6 x/-3 + 5 = 7 x/-3 = 2 x = -6
(x - 3x - 6) / 6 = (3x + 2) / 2 ∴2(3x + 2) = 6(3x + 2) ∴6x + 4 = 18x = 12 ∴12x = -8 ∴x = -2/3
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2x + 4 = 6/x - 3 ∴2x - 6/x + 7 = 0 ∴2x2 + 7x - 6 = 0 X ∈ {0.71221447, -4.2122145}
(x+2)/5 = 6+x x+2 = 30+5x x-5x = 30-2 -4x = 28 x = -7
-1/2
9
6
Following the correct order of operations: derivative of x^2 + 6/2 = derivative of x^2 +3, which equals 2x
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