Explanation

Explanation

The difference between +16 and +28 is:

+16 - (+28) = +16 - 28 = -12

Explanation

"Who" is a relative pronoun connecting the noun "man" to the clause "lives next door to me."

It introduces a relative clause that gives more information about the noun.

Explanation

The preposition "in" is used to show something is inside a space or place.

Furniture is inside a room, so "in their room" is the correct usage.

Explanation

Pressure = Force ÷ Area, which means it measures how much force is applied over a specific surface.

It is commonly measured in Pascals (Pa) where 1 Pa = 1 Newton/m².

Explanation

Conclude means کسی چیز کو ختم کرنے یا ختم کرنے کے لئے

Begin means اسے شروع کرنے کے لئے

Explanation

a² - b² = (a - b)(a + b)

a⁴ - b⁴ = (a² - b²)(a² + b²)

= (a - b)(a + b)(a² + b²)

The LCM is (a - b)(a + b)(a² + b²) = (a² - b²)(a² + b²)

= a⁴ - b⁴

Explanation

Sodium carbonate (Na₂CO₃) is commonly known as soda ash.

It is used in glass making, detergents, and water softening.

Explanation

Explanation

The ratio of circumference to diameter of any circle is a constant known as π (pi).

It is approximately equal to 3.14.

Pi (π) is an irrational number.

This meaning its decimal expansion never ends or repeats.

It is crucial in geometry, trigonometry, and engineering.