A, divide 2.5 by 5 and you get 0.5, multiply that by 9 and you get 4.5. A is the answer
Answer:
D
Step-by-step explanation:
Answer:
(
a
−
1
+
b
)(
a
−
1
−
b
)
.
All real numbers except -4 and 9.
The domain of an expression is the range of all values for which the expression is defined. Looking at the expression, it will legal everywhere except when a^2 - 5a - 36 is equal to 0. Since that's a quadratic equation, we can use the quadratic formula to find where its value is 0, giving -4 and 9.
Therefore the domain of the expression is, All real numbers except -4 and 9.
Do the division :- 21 / 7 = 3
Answer is 3
