if a=4 and b=8, calculate the following (show your answer as a fraction (lowest) or in decimal form). Show your work

(A+B)²
-------
A

(A+B)²
-------
B

A+B=12, so

144/4 = ?
and
144/8 = ?

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To calculate (A+B)² / A:

Step 1: Substitute the given values for A and B into the equation.
A = 4, B = 8

Step 2: Calculate (A+B)²:
(A + B)² = (4 + 8)² = (12)² = 144

Step 3: Calculate (A+B)² / A:
(A+B)² / A = 144 / 4 = 36

Therefore, the answer is 36.

To calculate (A+B)² / B:

Step 1: Substitute the given values for A and B into the equation.
A = 4, B = 8

Step 2: Calculate (A+B)²:
(A + B)² = (4 + 8)² = (12)² = 144

Step 3: Calculate (A+B)² / B:
(A+B)² / B = 144 / 8 = 18

Therefore, the answer is 18.