Question

1) (c-2)(c+2) 2) (12-х)(12+х) 3) (х+7)(7-х).

Answer 1

Пошаговое объяснение:

1) с²-4

2) 144-х²

3) х²-49

Answer 2

Certainly! I can help you expand these algebraic expressions:

1. $(c-2)(c+2)$

To expand this expression, you can use the FOIL method (First, Outer, Inner, Last):

$(c-2)(c+2) = c(c) + c(2) + (-2)(c) + (-2)(2)$

Simplifying, you get:

$= c^2 + 2c - 2c - 4$

$= c^2 - 4$

2. $(12-x)(12+x)$

Using the same FOIL method:

$(12-x)(12+x) = 12(12) + 12(x) - x(12) - x(x)$

Simplifying, you get:

$= 144 + 12x - 12x - x^2$

$= 144 - x^2$

3. $(x+7)(7-x)$

Again, applying the FOIL method:

$(x+7)(7-x) = x(7) + x(-x) + 7(7) + 7(-x)$

Simplifying, you get:

$= 7x - x^2 + 49 - 7x$

$= 49 - x^2$

So, the expanded forms of the given expressions are:

1. $c^2 - 4$

2. $144 - x^2$

3. $49 - x^2$