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lana [24]
3 years ago
10

Use the reverse of the distributive property to find the original expression. 5a + 10b - 25c

Mathematics
1 answer:
Norma-Jean [14]3 years ago
8 0
In the distributive property, we distribute something from the outside of the parentheses into the inside of the parentheses by multiplying . The reverse would be pulling a common factor from inside to the outside by dividing (factoring). In order to do this we have to find something common to everything in the parentheses. a, b, and c are not common, so let's look at the numbers...
5, 10, and 25 all have a factor of 5, so we need to divide each thing in the parentheses by 5 and bring it to the outside...

5a + 10b - 25c =

(5a/5)+(10b/5)-(25c/5)

5(a + 2b - 5c)

Done!

If you want to check it, do the distributive property and multiply 5 through the parentheses and you should get your original expression.

5(a + 2b - 5c) =
5a + 10b - 25c

It checks!
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#For x = 5

= y = 7 - x

= y = 7 - (5)

= y = 2

#For x = 2

= y = 7 - x

= y = 7 - (2)

= y = 5

and his x and y was find :

#Equation 1 :

= x = 5 and y = 2

#Equation 2 :

= x = 2 and y = 5

So that :

√7+√40 = √x + √y

= √7+√40 = √2 + √5

And that is answer of question :

= √2 + √5 + 1

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