Question

(a-2)2= (3x+y)2= (c-a)(c+a)=

Answer 1

1) а2-4
2)6х+у2
3)с2+са-ас-а2 в этом пункте степень

Answer 2

Let's simplify each expression step by step:

1. (a-2)^2: Expanding this expression, we get: (a-2)^2 = (a-2)(a-2) = a(a-2) - 2(a-2) = a^2 - 2a - 2a + 4 = a^2 - 4a + 4

2. (3x+y)^2: Expanding this expression, we get: (3x+y)^2 = (3x+y)(3x+y) = (3x)(3x) + (3x)(y) + (y)(3x) + (y)(y) = 9x^2 + 3xy + 3xy + y^2 = 9x^2 + 6xy + y^2

3. (c-a)(c+a): Expanding this expression using the difference of squares formula (a^2 - b^2 = (a + b)(a - b)), we get: (c-a)(c+a) = c^2 - a^2

So, the simplified forms of the given expressions are:

1. (a-2)^2 = a^2 - 4a + 4
2. (3x+y)^2 = 9x^2 + 6xy + y^2
3. (c-a)(c+a) = c^2 - a^2