Question

all formulas in basic geometry.

Answer 1

these are some main formulae..........
1.(a+b)²=a²+2ab+b²
2.(a-b)²=a²-2ab+b²
3.(a+b)(a-b)=a²-b²
4.(a+b+c)²=a²+b²+c²+2(ab+bc+ca)
5.(a+b)³=a³+b³+3ab(a+b)
6.(a-b)³=a³-b³-3ab(a-b)
7.a³+b³=(a+b)(a²-ab+b²)
8.a³-b³=(a-b)(a²+ab+b²)

Answer 2

Answer:

these are some main formula..........

1.(a+b)²=a²+2ab+b²

2.(a-b)²=a²-2ab+b²

3.(a+b)(a-b)=a²-b²

4.(a+b+c)²=a²+b²+c²+2(ab+bc+ca)

5.(a+b)³=a³+b³+3ab(a+b)

6.(a-b)³=a³-b³-3ab(a-b)

7.a³+b³=(a+b)(a²-ab+b²)

8.a³-b³=(a-b)(a²+ab+b²)