1.1. Solve for x.

Solution

Quest 1.1.2.
5x(x - 3)= 2

Solution

Quest 1.1.3.
x² - 2x > 3

Solution
x² - 2x > 3
x² - 2x - 3 > 0
(x - 3)(x + 1) > 0

x < -1 or x > 3

Quest 1.2.
x - 3y =1
x² - 2xy + 9y² = 17

Solution

Solution
Let 1234567893 = n
Then

= n(n+1)-(n+2)(n-1)
= n² + n - n² - n + 2
= 2