Question

resolva as equacoes
preciso pra agr pfvr

Answer 1

A) x²-25=0

X=√25

X=5

B)2x²-98=0

2x²=98

X²=49

X=√49

X=7

C) 24=6x²

X²=24/6

X²=4

X=√4

X=2

D)64x²-1=0

64x²=1

X²=1/64

X=√1/64

X=1/8

X=0,125

E)

7x²-14=0

7x²=14

X²=14/7

X²=2

X=√2

F)

-X²+49=0

-X²=-49.(-1)

X²=49

X=√49

X=7

G)

-25+100x²=0

100x²=25

X²=25/100

X=√25/100

X=√1/4

X= 1/2

X= 0,5

H)

X²-81/4=0

X²=81/4

X=√81/4

X=9/2

X=4,5