Question

Descompuneti in factori folosind gruparea termenilor
a)2x²+x-1=
b)2x²+3x+1=

Answer 1

a) $2 x^{2} +x-1=\ \textgreater \ 2 x^{2} +2x-x-1=\ \textgreater \ (2x-1)(x+1)$
b)$2 x^{2} +3x+1=\ \textgreater \ 2 x^{2} +2x+x+1=\ \textgreater \ (2x+1)(x+1)$
$Succes.$