Short Multiplication Formulas – second and third degrees

Here are all the short multiplication formulas you need in order to succeed in the course. Mastering these formulas will save you a lot of time in solving exercises and will help you avoid unnecessary calculation errors

1. Short Multiplication Formulas of second degree:

${(a+b)}^2=a^2 +2 a b + b^2$

${(a-b)}^2=a^2 -2 a b + b^2$

$a^2-b^2=(a-b)(a+b)$

2. Short Multiplication Formulas of third degree:

${(a+b)}^3=a^3+3a^2 b+3ab^2+b^3$

${(a-b)}^3=a^3-3a^2 b+3ab^2-b^3$

$a^3-b^3=(a-b)(a^2+ab+b^2)$

$a^3+b^3=(a+b)(a^2-ab+b^2)$

Press here for exercises and solutions using short multiplication formulas

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