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NeTakaya
3 years ago
13

Solve this problem 3 1/2 x = -5

Mathematics
1 answer:
Veseljchak [2.6K]3 years ago
8 0
To solve this 
First I would change the mixed number on the right side of the equation to an improper fraction
7/2 x=-5
Then  I would multiply both sides by 2/7
x=-10/7

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What is the solution set of 2x2-3x=5
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You use the quadratic formula:

2x {}^{2} - 3x = 5

2x {}^{2} - 3x - 5 = 0

x = \frac{3 + - \sqrt{9 -4(2)( - 5)}}{2 \times 2}  

x = \frac{3 + - \sqrt{49} }{4}  

x = \frac{3 + 7}{4} \: and \: x = \frac{3 - 7}{4}  

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Write a quadratic equation with the given roots. Write the equation in the form of ax^2+bx+c=0 where a b and c are integers
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You haven't provided the required roots, but I can tell you how to do this kind of exercises in general.

If the x^2 coefficient is 1, i.e. the equation is written like x^2+bx+c=0, then you can say the following about the coefficients b and c:

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So, for example, if we want an equation whose roots are 4 and -2, we have:

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So, the equation is x^2-2x-8=0

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And so the equation is

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