Question

write all the formula of algebric expressions

Answer 1

1.(a+b)^2= a^2+2ab+b^2

2. (a-b)^2=a^2-2ab+b^2

3. a^2-b^2= (a+b)(a-b)

4. (a+b+c)^2=a^2+b^2+c^2+2(bc+ab+ac)

Answer 2

1. (a+b)²=a²+2ab+b²

2. (a-b)²=a²-2ab+b²

3. a²-b²=(a+b)(a-b)

4. (a+b+c)²=a²+b²+c²+2ab+2bc+2ca

5. (x+a)(x+b)=x²+(a+b)x+ab

6. (a+b)³=a³+3a²b+3ab²+b³

7. (a-b)³=a³-3a²b+3ab²-b³

8. a³+b³=(a+b)(a²-ab+b²)

9. a³-b³=(a-b)(a²+ab+b²)

10. a³+b³+c³-3abc=(a+b+c)(a²+b²+c²-ab-bc-ca)

11. If a+b+c=0, then a³+b³+c³=3abc