Secondary school education General Math formula

General math formulaSecondary school education math formula and by heart policy.

(a+b)✓=a✓+2ab+b✓
(a-b)✓=a✓-2ab+b✓
a✓-b✓=(a+b)(a-b)
(a+b)3=a3+3a✓b+b3
(a-b)3=a3-3a✓+3ab✓-b3
a3+b3=(a+b)(a✓-ab+b✓)
a3-b3=(a-b)(a✓+ab+b✓)
(a+b+c)=a✓+b✓+c✓+2(ab+bc+ca)
(x+a)(x-a)=x✓+(a+b)x+ab
(x-a)(x-b)=x✓-(a+b)x-ab
(x+a)(x-b)=x✓+(a-b)x-ab
(x-a)(x+a)=x✓+(b-a)x-ab
a3+b3+c3-3abc=(a+b+c)(a✓+b✓+c✓-ab-bc-ca)

**Formula**
(a+b)✓=(a-b)✓+4ab
(a-b)✓=(a+b)✓-4ab
a✓+b✓=(a+b)✓-2ab
a✓+b✓=(a-b)✓+2ab
a✓+b✓=1/2{(a+b)✓+(a-b)✓}
2(a✓+b✓)=(a+b)✓+(a-b)✓
ab= (a+b/2)✓-(a-b/2)✓
4ab=(a+b)✓-(a-b)✓
a✓+b✓+c✓=(a+b+c)✓-2(ab+bc+ca)
2(ab+bc+ca)=(a+b+c)✓-(a✓+b✓+c✓)
(a+b)3=a3+b3+3ab(a+b)
(a-b)3=a3-b3-3ab(a-b)
a3+b3=(a+b)3-3ab(a+b)
a3-b3 (a-b)3+3ab(a-b)
a3+b3+c3-3abc=1/2(a+b+c){(a-b)✓+(b-c)✓+(x-a)✓}
(a+b+c)=a3+b3+c3+3(a+b)(b+c)(c+a)
a✓+b✓+c✓-ab-bc-ca=1/2{(a-b)✓+(b-c)+(x-a)✓}