3 years ago

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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