An expression has numbers, variables, and mathematical operations. The factors of the expression x³-4x²+7x-28 are (x²+7)(x-4).
In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The factors of the expression x³-4x²+7x-28 can be written as,
[tex]x^3-4x^2+7x-28\\[/tex]
Take x² as the common factor from the first two terms while 7 as the common factor from the last two terms.
[tex]x^3-4x^2+7x-28\\\\=x^2(x-4)+7(x-4)\\\\=(x^2+7)(x-4)[/tex]
Hence, the factors of the expression x³-4x²+7x-28 are (x²+7)(x-4).
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