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In the past three decades, Labour has seen a switch from ‘Old Labour’, democratic socialists, who are highly critical of capitalism, and believe in reducing inequality through state ownership and economic...

First, expand (x-2)²:

= (x-2)(x-2),

= x² - 2x - 2x + 4

= x² - 4x + 4

Add on the +7:

= x² - 4x + 11

<...

As we know, to find a gradient in a linear function, we have to calculate the difference in the objective function (usually y) by the difference in the choice variable (commonly x), you may know this as r...

Verbs that take 'sein' in the past are called intransitive verbs and there are certain questions that you can ask yourself to figure out, whether a verb takes 'sein'. The first question is "Does the ...

Hydraulic action, abrasion, attrition and solution.