Question

resolva a equação de 2 grau
na fórmula de baskara

Answer 1

2)

x²-x-6=0

a) 1
b)- 1
c)-6

∆=b²-4 a c
∆=(-1)²-4 * 1 * (-6)
∆=1 +24
∆=25

x=-b+-√∆/2*a
x= -(-1)+-√25/2*a
x=1+-5/2

x¹=1+5/2
x¹=6/2
x¹=3

x²=1-5/2
x²=-4/2
x²= -2

3)

2x²-8X+8=0 /2
x²-4X+4=0

a)1
b)-4
c)4

∆=(-4)²-4*1*4
∆=16-16
∆=0

x= -(-4)+-√0 / 2*1
x= 4+-0 / 2

x¹= 4+0/2
x¹= 4/2
x¹= 2

x²= 4-0/2
x²= 4/2
x²= 2