Question

Математика 7 класс (b+3) (b-3) =​

Answer 1

Ответ:

b²-9

Пошаговое объяснение:

формула (a-b)²=(a+b)(a-b)

Answer 2

Ответ:(b+3)(b-3)=b^2-3^2=b^2-9

Пошаговое объяснение:

Answer 3

To simplify the expression, let's use the distributive property (also known as FOIL method) to expand the expression:

(b + 3)(b - 3)

Using FOIL method: F - First terms: b * b = b^2 O - Outer terms: b * (-3) = -3b I - Inner terms: 3 * b = 3b L - Last terms: 3 * (-3) = -9

Now, combine all the terms:

b^2 - 3b + 3b - 9

The "3b" and "-3b" terms cancel each other out, leaving us with:

b^2 - 9

So the simplified expression is:

b^2 - 9