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How to solve a quadratic equation.

Group the like terms together to make the equation less messy leaving the equation equal to 0.Simplify the long quadratic equation into brackets.Each bracket must be equal to 0 to fulfil the equation.When a ...
IB
Answered by Imikan B. • Maths tutor
3353 Views

y = (x + 2)(x + 5)

steps as follows:x times x = x 2 2 times 5 = 102 times x = 2xx times 5 = 5xthen add these together:y = x 2 + 7x +10x = -2, -5; y = 0, 10
GL
Answered by Georgie L. • Maths tutor
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Identify some features from Debussy's Claire de Lune that are associated with the Romantic era.

Use of dissonant and crushed harmonies.Varied rhythm and rubato.No clear melody line.
GL
Answered by Georgie L. • Music tutor
4913 Views

Solve x^2 +11x +30 = 0

This is what we call a quadratic equation. To solve, first we need to factorise this equation into two brackets. (x + _ )(x + _) =0To fill the brackets, we need to find 2 numbers that add to 11 and multiply ...
HR
Answered by Holly R. • Maths tutor
5842 Views

Why is iodine a solid at room temperature and chlorine a gas, despite being in the same group?

Iodine is further down group 7 than chlorine. Their group number only describes the number of electrons they have in their outer shell. As iodine has a higher atomic number than chlorine, it also has more el...
SA
Answered by Stephen A. • Chemistry tutor
67756 Views