$$0.04(x+50)^{2}-3(x+50)+56$$

Help me with this problem

Question

$$0.04(x+50)^{2}-3(x+50)+56$$

Help me with this problem

anonymous · Answer

This can be expanded to: 0.04(x^2+100x+2500)-(3x+150)+56
If we expand even further, we get: 0.04x^2+4x+100-3x-150+56
=0.04x^2+x+6
=x^2/25+x+6
The we can factor this into ((x+10)(x+15))/25=0
Then multiply both sides by 25.
Now we have (x+10)(x+15)=25
Solving for x, we have; 
x=-15 or x = -10

anonymous · Answer

doesn't look like an equation so not suer why you are solving for x

anonymous · Answer

was this set = 0?

anonymous · Answer

u

anonymous · Answer

i mean u=

anonymous · Answer

the original problem was P(x) and subtract 50 from both sides so its 0 i guess

anonymous · Answer

was the problem to solve an equation or just to expand?  there is not number on the other side of the equal sign.  in fact there is no equal sign

anonymous · Answer

you lost me but that is ok, i will not worry about it