A. 1/5k - 2/3j and -2/3j + 1/5k
Step-by-step explanation:
Equivalent expressions are expressions that are the same even though they may appear different.When you plug in a value to represent a variable in these expression, they will give same answer when simplified.
In
1/5k - 2/3j and -2/3j + 1/5k you notice the operation signs in the terms has been maintained though the position of the terms shifted.
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Equivalent expressions :brainly.com/question/280220
Keywords: expressions, equivalent
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![\bf 5n^2+6n+7=n^2-4n\implies 5n^2+6n+7-n^2+4n=0 \\\\\\ 4n^2+10n+7=0\\\\ -------------------------------\\\\ \begin{array}{llccll} &{{ 4}}x^2&{{ +10}}x&{{ +7}}\\ &\uparrow &\uparrow &\uparrow \\ &a&b&c \end{array} \\\\\\ discriminant\implies b^2-4ac= \begin{cases} 0&\textit{one solution}\\ positive&\textit{two solutions}\\ negative&\textit{no solution} \end{cases}](https://tex.z-dn.net/?f=%5Cbf%205n%5E2%2B6n%2B7%3Dn%5E2-4n%5Cimplies%205n%5E2%2B6n%2B7-n%5E2%2B4n%3D0%0A%5C%5C%5C%5C%5C%5C%0A4n%5E2%2B10n%2B7%3D0%5C%5C%5C%5C%0A-------------------------------%5C%5C%5C%5C%0A%5Cbegin%7Barray%7D%7Bllccll%7D%0A%26%7B%7B%204%7D%7Dx%5E2%26%7B%7B%20%2B10%7D%7Dx%26%7B%7B%20%2B7%7D%7D%5C%5C%0A%26%5Cuparrow%20%26%5Cuparrow%20%26%5Cuparrow%20%5C%5C%0A%26a%26b%26c%0A%5Cend%7Barray%7D%0A%5C%5C%5C%5C%5C%5C%0Adiscriminant%5Cimplies%20b%5E2-4ac%3D%0A%5Cbegin%7Bcases%7D%0A0%26%5Ctextit%7Bone%20solution%7D%5C%5C%0Apositive%26%5Ctextit%7Btwo%20solutions%7D%5C%5C%0Anegative%26%5Ctextit%7Bno%20solution%7D%0A%5Cend%7Bcases%7D)
if you get a positive value, that means 2 real solutions
if you get 0, means 1 real solution only
if you get a negative value, is an imaginary root solution, same as saying no solution.
I think it may be: 0.66666666666
I only looked it up on the internet.