Question

resolva as seguintes equaçoes usando bhaskara a) 3x2-7x+4=0 b) 9y2-12y+4=0 c) 5x2+3x+5=0

Answer 1

x=-b=-V¨¨b²-4ac/2a
A)

x=-7+-V¨(7²)-4(3.4)/2.3
x=-7+-V¨¨49-48/6
x=-7+-V¨¨1/6
x¹=-7+1/6=-1
x²=-7-1/6=-4/3

B)

Y=-(-12)+-V¨¨(-12²)-4(9.4)/2.9
Y=12+-V¨¨144-144/18
Y=12+-V¨¨0/18
Y¹=12+0/18=4/6
Y²=12-0/18=4/6

C)

X=-3+-V¨¨(3²)-4(5.5)/2.5
X=-3+-V¨¨9-100/10
X=-3+-V¨¨-91/10

S=0
sem solução