x=1 or x= 12
Step-by-step explanation:
x²-13x+12=0
x²-12x-x+12=0
x(x-12)-1(x-12)=0
(x-1)(x-12)=0
x-1=0 or x-12=0
x=1 or x=12
Answer:
first one
it's 40!
10 x 10 = 100
10 x 4 = 40
6 x 10 = 60
and 6 x 4 = 24 !!
its A
