12-15=3 ............................................................
Answer:
43
Step-by-step explanation:
3x + 10 = 5x - 12
10 = 2x - 12
22 = 2x
x = 11
check:
33 + 10 = 55 - 12
43 = 43
correct
x = 11 so bring this into 3x + 10
we get 43
Answer:
20
Step-by-step explanation:
using the rule of radicals
×
=
, then
× ![\sqrt{8}](https://tex.z-dn.net/?f=%5Csqrt%7B8%7D)
= ![\sqrt{50(8)}](https://tex.z-dn.net/?f=%5Csqrt%7B50%288%29%7D)
= ![\sqrt{400}](https://tex.z-dn.net/?f=%5Csqrt%7B400%7D)
= 20
√35+√155
This is the answer: =√155+√35