Question

Раскройте скобки...... ​

Answer 1

Ответ:

1) a^2 + 4a + 4

2) x^2 + 8x + 16

3) x^2  - 6x + 9

4) a^2 - 10a + 25

Answer 2

Привет!

по формуле (a±b)²=a²±2ab+b²

${(a + 2)}^{2} = {a}^{2} + 4a + 4$

${(x + 4)}^{2} = {x}^{2} + 8x + 16$

${(x - 3)}^{2} = {x}^{2} - 6x + 9$

${(a - 5})^{2} = {a}^{2} - 10a + 25$