Answer:
Step-by-step explanation:
g/2-9=-7
inverse operation:
g/2-9=-7
+9 +9
g/2=2
g/2=2*2
g = 4
Answer:
Step-by-step explanation:
you can think in a reverse way:
Take

So the answer is

Answer:
-1 & -2
Step-by-step explanation:
x²+3x+2
x²+2x+x+2
(x²+2x)+(x+2)
x(x+2)+1(x+2)
(x+1)(x+2)
I am not exactly sure, but I am almost positive it is a spere

it just so happen that √2 is an irrational number, so any product with it as a factor, will yield an irrational number as well.
factoid: Ancient Greeks were scared of irrational numbers, and they steered clear from √2.