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Ivahew [28]
3 years ago
10

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

Mathematics
2 answers:
Zina [86]3 years ago
4 0

Answer:

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

AleksAgata [21]3 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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