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10x²=10x/:10
x²=x
x²=1
b) ?
c) 4x²≤1/:4
x²≤1/4
x≤1/2
(1 - 3x)² = 4x - x² + 1
1 - 6x + 9x² = 4x - x² + 1 |-1 - 4x - 9x²
-10 x = -10x² | : x
-10 = -10x
x=1
b.
2x² - 3x - 2 < 0
x(2x -3) -2 <0 |+2
x(2x-3) < 2
dalej nie wiem jak to można zrobić, sory
c. 4x²≤ 1 |:4
x²≤ 1/4 | pierwiastek z x
x ≤ 1/2