wyrazenie 5a^2+12a+4 mozna przedstawic w postaci iloczynu. wykonaj obliczenia.

5a² + 12a + 4 = 5a² + 10a + 2a + 4 = 5a(a + 2) + 2(a + 2) = (5a + 2)(a + 2) = 5(a + 2/5)(a + 2)

5a² + 12a + 4 Δ = b² - 4ac Δ = 144 - 80 = 64 [latex] sqrt{64} [/latex] = 8 a1 = [latex] frac{-12 - 8 }{10} [/latex] = - 2 a2 = [latex] frac{-12 + 8 }{10} [/latex] = - [latex]- frac{2}{5} [/latex] (a + 2) (a + [latex] frac{2}{5} [/latex])