x2-15x+10=0 faktorisasinya

a = 1
b = -15
c = 10

x = -b ± √ b² - 4ac / 2a
x = 15 ±√(-15)² - 4(1)(10) / 2(1)
x = 15 ± √225 - 40 / 2
x = 15 ± √ 185 / 2

x1 = 15 + √185 / 2
x2 = 15 - √185 / 2

semoga dapat membantu... ^^