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Write x^2 – 10x + 12 in the form (x – a)^2 + b , where a and b are integers.

This is a past exam question from a real GCSE paper, and is an example of "completing the square." I will show you 4 steps for answering this question. ¬¬¬ The first step is to check whether the x^...
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Answered by Emily Y. • Maths tutor
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How do we form the present continuous ?

The present continuous is used to describe what is happening in that moment. To form it we use: Estar in the present tense Yo estoy (I am) Tu estas(you are) El/Ella esta(he/she is) Nosotros estamos(we are) V...
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Answered by Hannah D. • Spanish tutor
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Give some of the ways body temperature is maintained?

The body must maintain an internal temperature of 37 degrees as this is the optimum temperature for body’s enzymes. When the body gets too hot the body responds in multiple ways: • The body releases sweat fr...
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Answered by Rachael Y. • Biology tutor
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What adaptations do animals have to help them survive in specific environments?

Animals living in harsh environments may have adaptations to help them survive. For example, animals living in hot conditions, like camels, have many features to help them survive. Camels have humps which ca...
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Answered by Rachael Y. • Biology tutor
6495 Views

How do vaccines cause immunisation to disease?

Vaccines contain an inactive form of a pathogen, or dead pathogen, and are injected into the body to give immunity to that pathogen. The inactive pathogen acts as an antigen, stimulating an immune response, ...
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Answered by Rachael Y. • Biology tutor
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