Answer:

Step-by-step explanation:
Given equation:
![\sqrt[3]{8x^5} - \sqrt[4]{256y^3}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B8x%5E5%7D%20-%20%5Csqrt%5B4%5D%7B256y%5E3%7D)
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Answer:
14
Step-by-step explanation:
x+21=7(x+9)
x+21=7x+63
-6x=42
x=-7
(-7)^2+5(-7)
=49+(-35)
=49-35
=14
Answer:
what is the angle of abc
Step-by-step explanation:
no explanation
Answer:
Step-by-step explanation:
Area=Length x Width
So you start with what you know
Length or in this case height=4x
Width=3x+1
Now you just plug it in
A=4x(3x+1)
Distribute the 4x to both terms (3x & 1)
A=12x^2+4x
Since we do not know what x is that would be your simplified answer.
1.) -15
2.) 104
3.) 220
4.) -11
5.) -9
6.) 705