Question

resolva:3x ao quadrado -83=15+x ao quadrado

Answer 1

3x²-83=15+x
3x²-x-98=0
Δ=b²-4.a.c
Δ=(-1)²-4.3.-98
Δ=1+1176
Δ=1177
x=-b+-√Δ/2.a
x=-(-1)+-√1177/2.3
x=1+-√1177/6
x'=1+√1177/6
x''=1-√1177/6
S={1+√1177/6;1-√1177/6}