If 3x = 81 then x = 27 and 27 cubed = 19683
-24
If the side is x feet then the total surface area, a= 6x2 feet and the volume, v = x3 cubic feet = x3/27 cubic yards So v = a => x3/27 = 6x2 ie x = 6*27 = 162 feet
X^3 + 27 = 0 subtract 27 from both sides X^3 = -27 take cubic root of both sides X = -3 (this sentence is true for x = -3) x3 + 27 = 0 the left side is the sum of the cubes, so it is factorable such as: x3 + 33 = 0 (x + 3)(x2 - 3x + 9) = 0
A "yard" of concrete is 3'x3'x3' or 27 cubic feet.
what x3 equals 63 is:21x3=63
That's the same as x3 times x3 which equals x6
3xyz
y2=x3+3x2
One because if x3 = 1 then x must equal 1
If: x3+1 = 65 Then: x3 = 65-1 And: x3 = 64 So: x = 4 by means of the cube root function on the calculator
IMPOSSIBLE