Hello.
400=(x+20)x is the equation or 400=x^2+20x
<span>(x+10)=square root of 500
</span>
<span>so x+10=10 radical 5
</span>
<span>final answer -10 + or - 10 radical 5=x
</span>
Have a nice day
Do 21 divided by 2 and you’ll get 10.5 so the original price was $10 and 50 cents
Answer: The answer is 4.5
Sorry I am not that good with geometry l
