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How would I solve x^2 + 7x + 10 = 0

The first step of solving this equation to find out what x is, is to factorise it. This means grouping it into a set of double brackets which will take the form (x+a)(x+b)=0. The a and the b must give the co...
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Answered by Will N. • Maths tutor
11775 Views

When should you use the subjunctive?

Many students can't get their heads around the subjunctive but it's much easier than it seems! A really handy way to remember when to use the subjunctive is by using the accronym 'WEIRDO': W ishes: When some...
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Answered by Yasmine A. • Spanish tutor
3678 Views

Factorise (x+3)(x-8)

(x+3)(x-8) x*x= x^2 x*-8= -8x 3*x= 3x 3*-8= -24 =x^2 - 8x + 3x - 24 =x^2 - 5x - 24
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Answered by Nikhitha J. • Maths tutor
4312 Views

What is the difference between ser and estar?

Describing people Unlike english, Spanish has two verbs for "to be": ser and estar. As a general rule ser is used to describe or answer questions about who or what something is, while estar describ...
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Answered by Thomas B. • Spanish tutor
5094 Views

What factors contribute to phenotypic variation between organisms?

Let us first understand what is meant by the term "phenotypic variation". Simply, the phenotype of an organism is its observable characteristics - like how it looks, how it behaves, and so on. Diff...
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Answered by Faheem M. • Biology tutor
17260 Views