Evaluate the expression for c = 4.4 and d = –7.2.

Question

Write your answer as a decimal or whole number.

c2 − d − 18 =

Answer 1

To evaluate the expression \( c^2 - d - 18 \) for \( c = 4.4 \) and \( d = -7.2 \), we can follow these steps:

1. Calculate \( c^2 \): \[ c^2 = (4.4)^2 = 19.36 \]

2. Now substitute \( c^2 \) and \( d \) into the expression: \[ c^2 - d - 18 = 19.36 - (-7.2) - 18 \]

3. Simplify the expression: \[ 19.36 + 7.2 - 18 \]

4. Combine \( 19.36 \) and \( 7.2 \): \[ 19.36 + 7.2 = 26.56 \]

5. Now subtract \( 18 \): \[ 26.56 - 18 = 8.56 \]

Thus, the final answer is: \[ \boxed{8.56} \]