Answer:
the answer is x=5
number two answer is x=7
Explanation:
x-4=36+12-x²=0
13x-40-x²=0
-x²-5x-8x+40=0
(x-5)×(x-8)
x=5
this is the number 1 sorry i can explain everything becuse is a lot
x-2=x²-8x+16
-x²+9x-14=0
x²-9x+14=0
x²-2x-7x+14=0
(x-2) (x-7)
x=7