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Because the highest power of X is 2, this is a Quadratic Equation

When factorised, these look like 

       (x + a)(x + b)                 where a & b ar...

Show clearly that (3√3)² = 27

First of all, the question looks overfacing due to the surds, I can assure you that surds are not scary, they simply act as a means of clea...

Absolute value means how far away you are from zero. It's better to draw a number line to understand and solve the question. 

Given the inequality l 4x+3 l >15 , the distance of the 4x...

Technical Definition: A way to approximate (very) smooth functions (for which derivatives up to high orders exist and are continuous)

Simple Definition: Ta...

Prerequisite for addition formula: https://www.youtube.com/watch?v=iHZmi2MHqWc
 
Proof of formula for sin(A+B): https://www.youtube.com/watch?v=BEETggUVMrY
 
Proof of formula for cos(A...