X = 0 1001 010

Y = 0 0111 110

Where the leading 1 on the exponent, the 2 and the 0111 are just all the standard, 0111 is the bias (7)

So what is X in base 10? 0b101 = 5

What is Y in Decimal?

X*Y

X = 0 1001 010

Y = 0 0111 110

A= 1 0101 101 B = 0 0011 001

Binary to Decimal

A+B

Back to binary 1 0101 010

A-B

Back to binary = 1 0101 111

A*B

Back to binary 1 0001 110

Note with this question, if the exponent on A or B was 2 lower (say -4, -4) then the resulting exponent would be -8, add the bias... and you can't represent -1 as an exponent so the problem wouldn't have a valid solution.

A/B