Question

Calculati :
1)2x^2-3x=0
2)x^2-25=0
3) x+1/2 < 3-x/4 + 1
Multumesc anticipat :v.

Answer 1

1) 2x² - 3x = 0
x(2x - 3) = 0
x1 = 0
2x - 3 = 0
2x = 3
x2 = 3/2

2) x² - 25 = 0
x² = 25
x1 = 5
x2 = -5

3) x + 1/2 < (3-x)/4 + 1

Inmultim cu 4:
4x + 2 < 3 - x + 4
4x + x < 7 - 2
5x < 5
x < 1
x∈(-∞, 1)