допоможіть 4x^2+x-3=0

Question

допоможіть 4x^2+x-3=0

Answer 1

D = 1 + 4*3*4 = 1 + 12*4 = 49 
x1 = ( - 1 + 7)/8 = 6/8 = 3/4 = 0,75
x2 = ( - 1 - 7)/8 = - 8/8 = - 1