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Ivahew [28]
2 years ago
10

X(x-1)-x^2+2x=5 :))))))

Mathematics
2 answers:
Zina [86]2 years ago
4 0

Answer:

x(x - 1) -  {x}^{2}  + 2x = 5 \\   {x}^{2}  - x -  {x}^{2}   + 2x = 5 \\  \therefore \: x \:  = 5

AleksAgata [21]2 years ago
4 0

Answer:

x=5

Step-by-step explanation:

x(x-1)-x^2+2x=5

expand by using distributive property

x^2-x-x^2+2x=5

simplify

x=5

check work by substituting 5 into the original equation and simplify

use PEMDAS

5(5-1)-5^2+2(5)=5

5(4)-25+10=5

add and subtract  (left to right)

20-25+10=5

5=5

The equation is true, thus x=5

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3 years ago
Simplify (-7/8)(-3/4).
murzikaleks [220]

Answer:

<h2>21/32</h2>

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<u><em>IMPORTANT: This number is not negative, because a negative times a negative is a positive.</em></u>

By the way, if you didn't know how to arrive at the fraction here's how.

First, Address input parameters & values.

Input parameters & values: The decimal number = 0.65625. Then, write it as a fraction

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