Who built the pyramids in Egypt

Who built the pyramids in Egypt

The ownership of the pyramids, the Pharaoh, ordered the slaves to build them!

Given the square of 1 + X + the third power of X + the fourth power of x = 0, find the value of the square of X + X + the third power of X + the fourth power of X + ·· + the power of 2015

If we know that the square of 1 + X + the third power of X + the fourth power of x = 0, then:
X + the square of X + the third power of X + the fourth power of X + ·· + the 2015 power of X
=X (1 + X's square + X's third power + X's fourth power) + X's sixth power * (1 + X's square + X's third power + X's fourth power) + X's 11th power * (1 + X's square + X's third power + X's fourth power)
+... + the power of X * (1 + the square of X + the third power of X + the fourth power of x)
+The 2011 power of X * (1 + the square of X + the third power of X + the fourth power of x)
=0+0+0+...+0+0=0

The displacement of Wuhan is 7000t, the density of sea water is 1.03 × 10 cubic kg / m3, and the buoyancy and volume immersed in sea water can be calculated by taking ten Niu as G

F floating = g row = m row, g = 7000x1000x10 = 7x10 power (n)
F = ρ GV row
The volume immersed in water is
V row = f floating / ρ g = 70000000 / (1.03x1000x10) = 6796m3

A hollow copper ball weighs 5N and has a volume of 0.6 × 10-3m3. It can be used in water______ (fill in "floating", "sinking" or "floating"), the buoyancy at rest is______ ．

If the buoyancy of the copper ball is: F floating = ρ GV row = 1 × 103kg / m3 × 9.8n/kg × 0.6 × 10-3m3 = 5.88n, then ∵ 5.88n ＞ 5N, that is, f floating ＞ g, so the object will float up and float when it is still, the buoyancy is equal to gravity, that is 5N