The factorise expression is (x - 3y)(4x - 1)
Factorisation is a process of finding the factors of algebraic equations or quadratic equation and representing them in simple form instead of expanded form.
Therefore, let's factorise 4x² - 12xy - x + 3y.
4x² - 12xy - x + 3y
Let's rearrange the expression
4x² - x - 12xy + 3y
x(4x - 1) - 3y(4x - 1)
Therefore, the factorise solution of the expression is as follows;
x(4x - 1) - 3y(4x - 1) = (x - 3y)(4x - 1)
learn more on factorisation here: https://brainly.com/question/11450122
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