Question

1)(x-4)²-16 2)10a+(a-5)²

Answer 1

Ответ:1) х²-8х

2)а²+25

Объяснение:

Answer 2

Sure, I can help you expand these expressions.

1. (x - 4)² - 16: Let's expand this expression step by step:

(x - 4)² means (x - 4) * (x - 4).

Using the FOIL method (First, Outer, Inner, Last), we can expand it:

(x - 4)² = x * x - 4 * x - 4 * x + 4 * 4 (x - 4)² = x² - 8x + 16

Now, subtract 16 from this expression:

x² - 8x + 16 - 16 = x² - 8x

So, (x - 4)² - 16 simplifies to x² - 8x.

2. 10a + (a - 5)²: Let's expand this expression step by step:

(a - 5)² means (a - 5) * (a - 5).

Using the FOIL method:

(a - 5)² = a * a - 5 * a - 5 * a + 5 * 5 (a - 5)² = a² - 10a + 25

Now, add 10a to this expression:

10a + (a² - 10a + 25)

Combine like terms:

10a - 10a cancel out, leaving us with:

a² + 25

So, 10a + (a - 5)² simplifies to a² + 25.