Question

ajutatima pls 4xla puterea 2-x-3=0

Answer 1

4x²-x-3 = 0

a = 4, b = -1, c = -3

Delta = b² - 4ac = 1-4*4*(-3) = 1+48 = 49

x1 = (-b + √delta)/2a = (1+7)/2*4 = 8/8 = 1

x2 = (-b-√delta)/2a = (1-7)/8 = -6/8 = -3/4

Answer 2

Delta= b^2-4ac

=(-1)^2 - 4*4*(-3)

=1-16*(-3)

=1+48=49

X1,2= -b+-rad delta/2a=> 1+7/8=8/8=1

X2= 1-7/8=>-6/8=> -3/4