Question

9х^2+12х=5 помогите

Answer 1

9x^2+12x-5=0
D=b^2-4ac=144-4*9*(-5)=144+180=324
x1,2= -b+-кореньизD/2a;
x1=-12+18/18=1/3
x2= -12-18/18=-30/18=-10/6

Answer 2

9x^2+12x-5=0
D=144+4*5*9=sqrt324 sqrtD=18
X1=1/3
X2=-5/3