Question

Polinomio (x+7)(x-7)-(x-1)(x+2)

Answer 1

x²-x²-14x+x+49-1=0
-x²-15x+48=0.(-1)
x²+15x-48=0
-15±√15²+4.1.(-48)/2
-15±√225+(-192)/2
-15±√225-192/2
-15±√33=>x¹=-15+√33} resposta
=>x²=-15-√33} resposta