If 314\(_{10}\) - 256\(_7\) = 340\(_x\), find x.

bquark

2 years ago

Unless you tell us how you get the magic 139, your solution does not convey any understanding.

Wiselingboy

1 year ago

i don't think the answer is right o
The factorising part is wrong,
3x² + 4x -175 = 0
3 * 175 = 525
we then look for two factors of 525 that when subtracted or added together will give us 4
which is 21 and 25
so, 3x² + 25x - 21x - 175 = 0
x( 3x + 25) - 7 ( 3x + 25)
since the two bracket contains the same thing we take one
( x - 7 ) ( 3x + 25 )
x = 7 or - 8⅓

Summer_7425

4 years ago

Please can you explain further

Itohowo2

12 years ago

Right

OgboSolomonChimsom

2 years ago

convert 256 of base 7 to ten

emmaxysmile

1 year ago

Factorising it will give us this:
3x^2 + 4x -175=0
3 x 175 = 525
Factors of 525: -21+25

oluebube13

6 years ago

314-139=3×^2+4×

Jamesmak101

2 years ago

𝖎𝖙𝖘 𝖓𝖔𝖙 𝖈𝖑𝖊𝖆𝖗

Arthurking

2 years ago

i don't really understand from 3x^2+4x-175=0

Lenubarifriday

2 years ago

please how did they get the 139

EwimDonatus

3 months ago

how did you get 139

CHIAMAKA2439

2 years ago

How did we get 25

akherefavour

2 years ago

The answer is clear but carefulness is needed while solving

blaire200

1 year ago

I'm lost 😭

Abisolaoyewale06

2 years ago

you convert 256 to base 10