Question
What is the purest form of
coal?Solution
The purest form of coal is anthracite. Anthracite has the highest carbon content, the fewest impurities, and the highest energy density among all types of coal. It is characterized by its hard, glossy appearance and is used primarily for residential and commercial heating due to its high heat output and relatively clean-burning properties.
If for non-zero x, x² - 4x - 1 = 0, what is the value of x² + 1/x²?
If, ( a + b = 14 ) and ( a² + b² = 106 ), then find the value of (a³ + b³).
If x2 – 10x + 20 = 0, then find the value of (x – 3)2 + 1/(x – 3)2
If x + 1/x = 5 then find out the value of x⁵ + 1/(x⁵)?
What is the value of (a² + b²+4c²- ab-2bc-2ca) (a + b+2c):
(a+2 )² + (b-5)² + (c+3)² = 0
Find the value of √ (a + b + c) ?
...x = 7 - 4√3 then the value of x³+1/x³ is equal to?
If 2x + y = 10 and 3x - 2y = 5, find the value of x + y.
If ab = -15 and (a2 + b2) = 34, then find the value of (a – b).
If x, y, z are the three factors of a 3– 7a – 6, then value of x + y + z will be
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