Question

A²-4-(a+4)²допоможіть ​

Answer 1

Ответ:

a²-4-(a+4)²=a² −4−(a² +8a+16)=a² −4−a²−8a−16=−4−8a−16=−20−8a

Пошаговое объяснение:

Answer 2

To simplify the expression A²-4-(a+4)², we can follow the order of operations (PEMDAS/BODMAS) and simplify each part of the expression step by step.

Step 1: Simplify the expression inside the parentheses

The expression (a+4)² can be simplified by squaring the binomial. This means multiplying the binomial by itself. (a+4)² = (a+4)(a+4) = a² + 4a + 4a + 16 = a² + 8a + 16

Step 2: Simplify the expression A²-4-(a+4)²

Now, we can substitute the simplified expression (a² + 8a + 16) into the original expression: A² - 4 - (a+4)² = A² - 4 - (a² + 8a + 16)

Step 3: Combine like terms

To simplify further, we can combine like terms. In this case, we have A² and -4 as the like terms. A² - 4 - (a² + 8a + 16) = A² - a² - 8a - 20

Step 4: Simplify the expression

To simplify the expression, we can subtract the like terms A² and a², and combine the terms with 'a'. A² - a² - 8a - 20 = (A² - a²) - 8a - 20 = (A - a)(A + a) - 8a - 20

So, the simplified expression is (A - a)(A + a) - 8a - 20.

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