Question

Descompuneți în factori expresiile:
a) x²-2x-3
b)2x²-x-3
c)3x²+-1
d)-3x²-5x-2
Ajutațimă vărog

Answer 1

a) x²-2x-3=(x+1)(x-3)
                   x=-1, x=3
b)2x²-x-3=(x+1)(2x-3)
                 x=-1,  x=3/2
c)3x²-1=-1/3(√3-3x)(3x+√3)
                         x=-1/√3, x=1/√3
d)-3x²-5x-2=-(3x+2)(x+1)
                      x=-2/3, x=-1