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Alekssandra [29.7K]
3 years ago
6

Which shows the correct substitution of the values a b and c from the equation -2 equals negative X Plus x squared minus 4 into

the quadratic formula?
Mathematics
1 answer:
kondor19780726 [428]3 years ago
5 0
-2=-x+x square-4
firstly regroup the equation
x square-2x+x-2=0
x square-x-2=0
multiply the first term by the last term.(I.e x square multiply by -2=-2x square)
product of factor = -2x 1
sum of factor= -2x+1(x)= -1
x square -2x+x-2=0
open the bracket:
x(x-2)+1(x-2)=0
x=1 or x=-2
Therefore; x=-1 or x=2


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Are the fractions 1/5 , 5/5 , and 5/1 equivalent?Explain.
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<span><u><em>Answer:</em></u>
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<u><em>Explanation:</em></u>
<u><em>Let's take a look at each one of them separately:</em></u>
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The fraction is formed by dividing one part over five

</span>\frac{5}{5}<span> : This fraction is not in the simplest form. We can divide 5 by 5 and the answer would be 1. Therefore, </span>\frac{5}{5}<span> is equivalent to 1

</span>\frac{5}{1}<span> : This fraction is not in the simplest form. We can divide 5 by 1 and the answer would be 5. Therefore, </span>\frac{5}{1}<span> is equivalent to 5.

Based on the above, we can cnfirm that 0.2 , 1 and 5 are not equivalent.
Therefore, the given fractions are not equivalent

Hope this helps :)</span>
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