Question

f(x)=x2-3x funçao quadratica

Answer 1

 x^{2} -3x=0
$(delta)=b ^{2}-4ac=(-3) ^{2} -4*1*0=9 x=-b +- \sqrt{9} /2*1x=-3+- \sqrt{9}/2$
x'=-3+3/2=0
x''=-3-3/2=-3