Question

the square of x is equal to 4 times the square of y. If x is 1 more than twice y , what is the value of x?

Answer 1

@Preetha

Answer 2

x^2 = 4*y^2

Answer 3

(1+2y)^2 = 4y^2

Answer 4

1 + 2y = 4y

Answer 5

1/2=y???

Answer 6

x^2 = 4(1/2)^2

Answer 7

no, 1+4y+4y^2=4y^2

Answer 8

oh so

Answer 9

x^2 = 4*y^2
x = 1+2y


x^2 = 4*y^2

(1+2y)^2 = 4*y^2

(1+2y)^2 = (2y)^2

1+2y = 2y

I'll let you finish

Answer 10

x^2 = 4*y^2
x = 1+2y


x^2 = 4*y^2

(1+2y)^2 = 4*y^2

(1+2y)^2 = (2y)^2

1+2y = 2y

I'll let you finish

Answer 11

x^2 = 4*y^2
x = 1+2y


x^2 = 4*y^2

(1+2y)^2 = 4*y^2

(1+2y)^2 = (2y)^2

1+2y = 2y

I'll let you finish

Answer 12

@Michael2392010 Don't copy other peoples answers will ya?

Answer 13

jk

Answer 14

whoa now, let's not get racist here...

Answer 15

Correction, forgot about the absolute values...


x^2 = 4*y^2
x = 1+2y

x^2 = 4*y^2

(1+2y)^2 = 4*y^2

(1+2y)^2 = (2y)^2

|1+2y| = |2y|

1+2y = 2y or 1+2y = -2y

solve both for y

Answer 16

that doesnt make any since

Answer 17

u cant

Answer 18

one of those equations has no solution, but the other does have a solution

Answer 19

wait question

Answer 20

how did u get -2y

Answer 21

oh cuz its sqrt

Answer 22

nvm i see

Answer 23

I used the idea that

sqrt(x^2) = |x|

and

if |x| = k, then x = k or x = -k

Answer 24

1/-4 = y

Answer 25

or y = -1/4, use this to find x

Answer 26

x^2 = 4*(-1/4)^2

Answer 27

x^2 = 4 * (-1/8)

Answer 28

no

Answer 29

x^2 = -4/8

Answer 30

(-1/4)^2 is NOT -1/8

Answer 31

oh 16 oops

Answer 32

it's not 16 either, but that's closer

Answer 33

x^2 = -1/64

Answer 34

i ment 16 is the denom

Answer 35

z thats wrong

Answer 36

(-1/4)^2 = (-1/4)*(-1/4)

the two negatives on the right side will multiply to a positive number

Answer 37

x^2 = 1/64

Answer 38

x^2 = 4/64

Answer 39

x^2 = 1/16

Answer 40

x = 1/4 :D

Answer 41

thanks sir

Answer 42

no

Answer 43

remember that x^2 = 4*y^2

Answer 44

so you should have

x^2 = 4*(1/16)

x^2 = 1/4

Answer 45

so x = ??

Answer 46

1/2?

Answer 47

yep

Answer 48

you can also use the second equation

x = 1+2y

x = 1+2(-1/4)

x = 1 - 1/2

x = 2/2 - 1/2

x = 1/2