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Show x^2 + 8x +15 = 0 in the form of (x+b)^2 +c (complete the square) and then solve the equation

x 2 +8x +15 = 0 (x+4) 2 -16 +15=0 (x+4) 2 -1=0 (x+4)= (+/-)1 x = -3 or -5
OA
Answered by Omar A. • Maths tutor
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How do lines 4–9 (verum Acerronia ... infertur) give a strong impression of Agrippina's quick thinking and intelligence?

During the shipwreck, Tacitus throws emphasis on Agrippina’s quick thinking and intelligence by juxtaposing the character with her companion, Acerronia. While Acerronia is defined by the qualifying “impruden...
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Answered by Rory M. • Latin tutor
2745 Views

Explain why a mutation in the viral RNA leads to a change in the 3D shape of the protein antigens (3 marks)

A mutation in the viral RNA results in a change in the RNA base sequences. This can result in a change in the amino acid sequence during translation. This then changes the position of intramolecular bonds, s...
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Answered by Virad K. • Biology tutor
13186 Views

How do I work out the area of a quarter circle with radius 6cm?

The easiest way to do this is to first work out the area of the whole circle. To work out the area of a circle, the equation is area = πr 2 , where r is the radius. So, to work out the area we work out π x 6...
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Answered by Carla C. • Maths tutor
14089 Views

Implement a rocket launch countdown.

To do this we would create a function with a simple loop that iterates downwards and prints the numbers downwards. Then at the end of the loop we would simply print 'blast off'.def countdown (n): while n &gt...
MM
Answered by Matthew M. • Python tutor
5133 Views