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X2+3X+5X+15
Take the first X in the first bracket and multiply by every number or letter in the second bracket.
Take the Second number in the first bracket and mu...
It is important we first define what we mean by an odd and even number. An even number is any integer (whole number) number divisible by 2 so we can express any even number as 2x...
a^2 + b^2 = c^2
First things first, we have to decide what type of equation this is, so we can choose how to deal with it. If it were linear (which means every term involving an 'x' has no power/superscr...
There are several different methods for solving quadratic equations. The method you use depends on the equation in question. Usually, the easiest method is by factorising the quadratic, so...
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