Question

(4x - 3)2 = 121

Answer 1

need help with this problem (4x - 3)2 = 121

thanks

Answer 2

8x-6= 121 8x=127 x=127/8
x=15.875
like this maybe?

Answer 3

\[(4x-3)^{2}\]

Answer 4

or is it that?

Answer 5

take square root of both sides:

4x - 3 = 11 or 4x -3 = -11

Answer 6

i've assumed its (4x - 3)^2

Answer 7

if its times 2 then donclux has got it

Answer 8

ill write the other one too :) in a sec

Answer 9

@cwrw238 yes this is correct (4x-3)^2=121

Answer 10

@donciux123 , looks correct but what are the steps that you use to work out the problem this way i know.

Answer 11

\[(4x-3)^{2} =121\]
\[16x ^{2} -24x + 9 = 121\]
\[16x ^{2} -24x +130\]
\[D=(-24)^{2}- 4*16*130=576 -8320= -7744\] and its imposibruu

Answer 12

so is it the first one or the second one?

Answer 13

@donciux123 it is the first one

Answer 14

so its like this
\[4x*2 - 3*2 = 121\]
\[8x -6 =121\]
\[8x= 121 +6\]
\[8x=127\]
\[x=127/8\]
\[x = 15,875\]

Answer 15

(4x-3)^2 = 121 never seen it written the way you did it

Answer 16

so it is the second one.... i wrote that already... but i couldnt solve it ... couse i cant use D :D

Answer 17

alternatively
4x - 3 = 11
4x = 14
x = 3.5

or

4x-3 = -11
4x = -8
x = -2

Answer 18

Ohh.. forgot about that way :DD