If a - b = 4 and a2 + b2 = 18, find the value of ab.

If a - b = 4 and a2 + b2 = 18, find the value of ab.

Answer/Solution

1

Steps/Work

2ab = (a2 + b2) - (a - b)2
= 18 - 16 = 2
ab = 1.
Answer: B

General Calculator / Auto Solver

If a - b = and a + b = , find the value of ab.

Calculated Answer

1

Step by Step Solution

In order to solve problem, you must evaluate (n₃ - n₀^n₁) / n₁.

n₀ =	4
n₁ =	2
n₂ =	2
n₃ =	18

(n₃ - n₀^n₁) / n₁
Evaluate n₀^n₁ = 16
(n₃ - 16) / n₁
Evaluate n₃ - 16 = 2
2 / n₁
Evaluate 2 / n₁ = 1
1
The answer to the problem and the result of (n₃ - n₀^n₁) / n₁ is 1