Question

решите уравнение:
x²+3x=10

Answer 1

${x}^{2} + 3x = 10 \\ {x}^{2} + 3x - 10 = 0$
D = 9 + 4 • 10 = 9 + 40 = 49

x1 = ( - 3 - 7 ) / 2 = - 10 / 2 = - 5

x2 = ( - 3 + 7 ) / 2 = 4 / 2 = 2



ОТВЕТ: - 5 ; 2