Question

$(x - 3)(2x + 1) = x(x + 5)$
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Answer 1

Answer:

x=9

Step-by-step explanation:

[x-3] [2x+1] = x[x=5]

x-3+[2x+1] = 2x+5

x-3+2x-1=2x+5

x-[+2x]-3-1

x-2x-3-1=2x+5

-x-4=2x+5

-2x-x=4+5

x=9

Answer 2

Step-by-step explanation:

Given  (x – 3)(2 x + 1) = x(x + 5)

•  Now we have the given equation as  
•          (x – 3)(2 x + 1) = x(x + 5)
•  We get 2 x^2 – 6 x + x – 3 = x^2 + 5 x
•         2 x^2 – 5 x – 3 – x^2 – 5 x = 0
•      So x^2 – 10 x – 3 = 0

The equation is a quadratic polynomial and therefore (x – 3)(2x + 1) = x(x + 5) is a quadratic equation.

Reference link will be

https://brainly.in/question/1345040

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