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Find the sum and product of the roots of the equation 2x^2+3x-5=0

We know that for equation ax^2+bx+c=0 a = 2,b = 3,c = -5 If the roots x1 and x2 are real numbers: x1 + x2 = -b/a = -3/2 x1*x2 = c/a = -5/2
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Answered by Pavel G. Maths tutor
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Find minimum and maximum of x^2+1 if they exist

There are several methods of finding the extrema(plural of extremums or in other words minimum or maximum values) of a function. For now we will analyse the function using the dy/dx of f(x)=y=x 2 +1, f ` (x)...
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Answered by Pavel G. Maths tutor
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What is the French subjunctive?

The subjunctive is a mood which expresses actions or ideas which have an element of doubt or subjectivity about them. Examples include emotions, will/wanting, possibility, necessity and opinions/judgements. ...
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Answered by Natasha H. French tutor
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What is a cadence?

Cadences are often described as musical punctuation. They come at the ends of musical phrases and passages. There is a perfect cadence, which sounds final, like a full stop; there is an imperfect cadence whi...
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Answered by Natasha H. Music tutor
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Why are metals good conductors?

Metals have delocalised electrons which are free to move and carry charge throughout the sea of cations.
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Answered by Emma H. Chemistry tutor
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