Question

Решите срочно плииииз

Answer 1

x^2+3x=10
x^2+3x-10 = 0
d=9+40=49; sqrtD=7
x1=(-3-7)/2=-5; x2=4/2=2;
Ответ: x1=-5; x2=2

Answer 2

Х^2 + 3х = 10
Х^2 + 3х - 10 = 0
D = 9 + 40 = 49 = 7^2
X1 = ( - 3 + 7 ) : 2 = 2
X2 = ( - 3 - 7 ) : 2 = - 5