Make a formula booklet of chapters 1&2
CLASS 9TH
SUBJECT MATHS
CHAPTERS 1 AND 2
HELP ME
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Answer: chapter 2 formulas for class 9 are
(I) a^2 - b^2 = (a-b) (a+b)
(II) (a-b)^2= a^2 + b^2 - 2ab
(III) (a+b)^2 = a^2 + b^2 + 2ab
(IV) (a+b)^3 = a^3+ b^3+3a^2b+3ab^2
(V). (a-b)^3 =. a^3 - b^3 - 3a^2b +3ab^2
Step-by-step explanation: