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The preterite and imperfect are both past tenses in Spanish. In general, the preterite tense is used to describe actions that took place in the past and are completed, wh...

When I am expanding brackets I use the acronym FOIL and simplify. You begin by multiply the first term (F) in each bracket, followed by multiplying the outside terms (O), then the inside terms (I) and fin...

ardy broadly presents desire as a negative, disruptive force within the novel. This disruption emerges firstly from Alec's desire for Tess, which leads to her being raped in the section Maiden no More, as...

cos(2x) = 2cos²(x) - 1 This is the identity. Therefore we can substitute in 2[cos²(x)] to be 2 multiplied by (1/4)².Therefore cos(2x) = 2(1/4)(1/4) - 1 = 2/16 - 1 = 2/16 -...

2x^2 - 2x - 12