what is algebra. write all formulas up to grade 8
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Algebra is the part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.
Formulas:-
Algebraic Identities For Class 8
(a+b)2=a2+2ab+b2
(a−b)2=a2−2ab+b2
(a+b)(a–b)=a2–b2
(x+a)(x+b)=x2+(a+b)x+ab
(x+a)(x–b)=x2+(a–b)x–ab
(x–a)(x+b)=x2+(b–a)x–ab
(x–a)(x–b)=x2–(a+b)x+ab
(a+b)3=a3+b3+3ab
(a+b)(a–b)3=a3–b3–3ab(a–b)
Formulas:-
Algebraic Identities For Class 8
(a+b)2=a2+2ab+b2
(a−b)2=a2−2ab+b2
(a+b)(a–b)=a2–b2
(x+a)(x+b)=x2+(a+b)x+ab
(x+a)(x–b)=x2+(a–b)x–ab
(x–a)(x+b)=x2+(b–a)x–ab
(x–a)(x–b)=x2–(a+b)x+ab
(a+b)3=a3+b3+3ab
(a+b)(a–b)3=a3–b3–3ab(a–b)
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