Gente preciso de ajuda 4x2 -x-3=0
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4x²-x-3=0
a=4, b= -1, c= -3
∆= (-1)²–4 × 4 × (–3)
∆=1 – 16 × (–3)
∆=1 + 48
∆= 49
x =(–(–1) ± √49) ÷ 4 × 2
x= ( 1 ± 7 ) ÷ 8
x= ( 1 + 7 ) ÷ 8
x= 8 ÷ 8
x= 1
x= ( 1 – 7) ÷ 8
x= –6 ÷ 8
x= –3/4
S= { –3/4 ; 1 }
a=4, b= -1, c= -3
∆= (-1)²–4 × 4 × (–3)
∆=1 – 16 × (–3)
∆=1 + 48
∆= 49
x =(–(–1) ± √49) ÷ 4 × 2
x= ( 1 ± 7 ) ÷ 8
x= ( 1 + 7 ) ÷ 8
x= 8 ÷ 8
x= 1
x= ( 1 – 7) ÷ 8
x= –6 ÷ 8
x= –3/4
S= { –3/4 ; 1 }
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