2X^3-2x-40=0
Hope this helps
So if she bought 20 share of stock for $175 that means that she paid $8.75 for each stock so if she made $25 you add then you divide
175÷20 = $8.75
175+$25=$200 she sold them for
$200 ÷ 20= $10
Your answer in scientific notation is 2.355 * 10^14
I think you guys are using a^2 + b^2 = c^2
the equation would be
x^2 + 2x^2 = 6^2
Download an app called photomath
it will help you