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Solve x^2 = 4(x – 3)^2

To solve this equation we need to firast expand it. x 2 =4(x-3) 2 To do this we first expand the brackets. Remeber anything squared means times it by itself (x-3) 2 =(x-3)(x-3) =x 2 -6x+9 This makes the equa...
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Answered by Annabel M. Maths tutor
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With reference to valencies, describe and explain the differences in reaction as you go down group 1 of the periodic table for the reaction: metal + water -> Metal hydroxide + hydrogen.

As you descend the group, the reactions become more vigorous, more exothermic and have a higher rate of reaction. Lithium will just gently fizz and produce a gas, sodium will melt into a ball shape and fizz ...
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Answered by George N. Chemistry tutor
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What is meant by дательный падеж and what is an example of where it is used?

The dative case. This is a case used for indicating movement towards something, e.g. in the sentence 'give the book to me' the word 'me' takes the dative case. The word мне thus means 'to me'.
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Answered by Anna H. Russian tutor
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What are the irregular verbs in the subjunctive tense?

There are 6 irregular verbs in the present subjunctive tense; dar, ir, ser, haber, estar, saber. The conjugations are as follows: Dar: dé, des, dé, demos, deis, den Ir: vaya, vayas, vaya, vayáis, vayan Ser: ...
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Answered by Hollie W. Spanish tutor
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What are the key features of Radical Feminism?

Radical feminism is a movement and political school of thought that emerged in the 1970s/80s to fundementally question the unequal social relations between men and women. They argue that sexual oppression is...
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Answered by Kalinda T. Politics tutor
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