solve x^2-3x=0
Let's solve in ℝ: x2 -3x = 0
You can write the expression: x2 -3x in factored form: x·(x -3)
A product is zero if and only if one of its factors is zero: we solve each factor equal to 0
⇥Let's solve in ℝ: x = 0
⇥Solution found: x = 0
⇥Let's solve in ℝ: x -3 = 0
⇥Solution obtained: x = 3
▶Solution:   x = { 0, 3 }