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Find the zeroes of the quadratic polynomial x^2 + 8x + 15.

x 2 +8x+15 = (x+3)(x+5)So, the value of x 2 +8x+15 is zero when x 2 +8x+15 = 0 i.e. x = -3 or x = -5.
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Answered by Piyush S. • Maths tutor
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Describe the 'reflex arc'

The relfex arc is an innate response designed to keep us safe (this means we do not consiously think about doing it). One of the most common examples for this question is a person touching a hot flame and im...
LR
Answered by Lauren R. • Biology tutor
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What's an Ablative Absolute?

An "ablative absolute" is made up of a noun and a participle in the ablative. It's called an absolute because it's grammatically independent from the rest of the sentence. It's usually found with P...
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Answered by Calypso H. • Latin tutor
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What is the number of protons in an atom also called?

The atomic number.
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Answered by Grace M. • Chemistry tutor
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List 3 halogen elements?

Chlorine, bromine and iodine.
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Answered by Grace M. • Chemistry tutor
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