well, 2 a b = 0
so either a = 0 or b = 0 or both :)
b ) let me see 5 - 5 = 0
I think true
c) I suppose so
d) sure n/1
TRUE OR FALSE ? Justify your answer.
a. There exist real numbers a and b such (a+b)^2 = a^2 + b^2.
b. For any real number x, there exists a unique number -x such that x + (-x) = 0.
c. Any integer n is either odd or even.
d. Any real number x can be written as a fraction.
1 answer
1 answer