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An Exponent is a shorthand notation for repeated multiplication of the same factor. For instance: 5^4 actually means 5 x 5 x 5 x 5 = 625
Multiplication can be thought of as repeated addition because when you multiply two numbersÊit is equivalent to adding one of these two numbers to itself the number of times indicated by the second number. For example, 2 x 4 can be written in addition form as 2 plus 2 plus 2 plus 2. It can also be given as 4 plus 4.
2&8 4&4 16&1
y = x2 - 4x + 4 can be factored into y = (x-2)(x-2) The repeated factor is 2.
Multiplication by a positive integer can be considered as repeated addition. This can be extended to multiplication by fractions. Thus 3*4 = 4.1 + 4.1+ 4.1 (three lots of 4.1) = 12.3