Question

Standard formulace. -
1) (a+b) 2 a ² + 2ab +6²
2) (a - b) ² - a - 2ab + b²
3) (a+b) (a-b) = a ² - 2²
u) (a+b) ² (0-3) 2 - 2(a²b2
5) (a + b)2-(a-b) ² - uab.​

Answer 1

Answer:

• 1 st formula is wrong 2ab+b