Question

all maths formulas in algebra class 7

Answer 1

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

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

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

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


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Hope you learn these formula... this is enough for class 7...

best of luck☺☺☺