X²=12x-5
minus 12x both sides
x²-12x=-5
take 1/2 of the linear confident and square it
-12/2=-6, (-6)²=36
add that to both sides
x²-12x+36=-5+36
factor perfect square
(x-6)²=31
sqrt both sides, remember to take positive and negative roots
x-6=+/-√31
x=6+/-√31
the solutions are 6+√31 and 6-√31
I believe it is 42 degrees for angle PCD
Answer:
55
Step-by-step explanation:
The angles are complementary as they add up to make a right angle/ 90° as indicated by the small square. So let's make an equation and solve for x :
x-20 + x = 90
Add 20 to both sides :
x+x = 110
2x = 110
Divide both sides by 2 :
x = 55
Hope this helped and have a good day
Answer:
top right bottom left
Step-by-step explanation:
