Question

resolva a equação x²- 1 = 3x/2 aplicando a formula geral

Answer 1

x²-1=3x/2
x²-3x-1×2=0
x²-3x-2=0

DELTA

∆=b²-4.a.c
∆=(-3)²-4.a.c
∆=9-8
∆=1

x=-b±✓∆/2.a
x=-(-3)±✓1/2.1
x=3±1/2

x'=3+1/2
x'=4/2
x'=2

x"=3-1/2
x"2/2
x"=1

pronto