Question

resolva: a)4y²-64=0 b)9y²-6y=0 c)8x²_24=0

Answer 1

Olá, boa noite ☺

Resoluções:

a)

4y²-64=0
4y²=64
y²=64/4
y²=16

y=±√16

y'= 4
y''= -4

S={4,-4}

b)

9y²-6y=0
y(9y - 6)=0

y'=0

9y-6=0
9y=6
y=6/9 : 3/3=2/3
y''=2/3

S={0,2/3}

3)

8x² - 24=0
8x²=24
x²=24/8
x²= 3

x=±√3

x'=√3
x''= -√3

S={√3,-√3}

Bons estudos :)