Hey There!
The answer to your problem is
or
both answers are correct!
<u>Step 1: Subtract x²+12 from both sides.</u>
−7x−(x²+12)=x²+12−(x²+12)
−x²−7x−12=0
<u>Step 2: Factor left side of equation.</u>

<u>Step 3: Set factors equal to 0.</u>
or 
<u>Get your answer:</u>
or 
M1= 5 , M2=1
Explanation:
12-3m-4-5/m=0
8-3m-5/m=0
(8-3m-5/m=0) * m
8m-3m^2-5=0
8m-3m^2=5
m(8-3m)=5
m1=5
m2=> (8-3m)=5
3m=3
m2= 1
Angle O and P are the same.
Subtract angle 1 from 180 and divide by 2:
Angle O = 180-36 /2
Angle O = 144 /2
Angle O = 72
area of rectangle= length × width
= 19×33
= 627 sq units