Question

Помогите по алгебре !!!!!!!!!

Answer 1

№1.

1) (8х + 3)(8х + 3) = 64х^2 + 24х + 24х + 9 = 64х^2 + 48х + 9

2) (10a-b)(10a-b) = 100a^2-10ab - 10ab + b^2 = 100a^2 - 20ab + b^2

3) (-5a - 4)(-5a-4) = 25a^2 + 20a + 25a^2 + 16 = 50a^2 +20a + 16

4) (5a + 4)(5a +4) = 25a^2 +20a +20a + 16 = 25a^2 + 40a + 16

5) (c-d)(c-d) = c^2 - cd -cd +d^2 = c^2 -2cd - d^2

6) (x+y)(y+x) = xy + x^2 + y^2 + xy = 2xy +x^2 + y^2

7) (8x - 3)(8x + 3) = 64x^2 + 24x -24x -9 = 64x^2 - 9

8) (10a + b)(10a - b) = 100a^2 -10ab +10ab -b^2 = 100a^2 - b^2

9) (4 + 5d)(5d - 4) = 20d -16 +25d^2 - 20d = 25d^2 - 16

10) (c-d)(c+d) = c^2 +cd -dc - d^2 = c^2 - d^2

11) (y + x)(x - y) = xy - y^2 +x^2 -xy = y^2 + x^2

№2

1) (a+b)^2

2) (a +d)(a-b)

3) (a-b)^2

4) (a + b) - 2(a * b)

5)  a^2 - b^2

6) (a^2 + b^2) + 2(a * b)

Дополнительно:

* - умножение

^ - степень