10 arithmetic formulas for class7
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Refer to pic attached,
1.(x+a) (x+b) = x2+x(a+b)+(ab)
2.(a+b)2 = a2+2ab+b2
3.(a-b)2 = a2-2ab+b2
4.(a2-b2) = (a+b) (a-b)
Commutative law: a*b = b*a
Associative law: a*(b*c) = (b*c)*a = (c*a)*b
Distributive law: a(b+c) = ab+ac
BODMAS RULE:
Brackets Of
Division
Multiplication
Addition
Subtraction
1.(x+a) (x+b) = x2+x(a+b)+(ab)
2.(a+b)2 = a2+2ab+b2
3.(a-b)2 = a2-2ab+b2
4.(a2-b2) = (a+b) (a-b)
Commutative law: a*b = b*a
Associative law: a*(b*c) = (b*c)*a = (c*a)*b
Distributive law: a(b+c) = ab+ac
BODMAS RULE:
Brackets Of
Division
Multiplication
Addition
Subtraction
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Answered by
2
hey it's your answer
perimeter of square = 4× side
perimeter of rectangle=2(length + breadth)
Area of square=Side × Side
Area of rectangle=length× breadth
circumference of circle=2πr
and rest are in the picture☺️there r more than 10
i hope it will help u
if it help anyone please say atleast @thanks
☺️
perimeter of square = 4× side
perimeter of rectangle=2(length + breadth)
Area of square=Side × Side
Area of rectangle=length× breadth
circumference of circle=2πr
and rest are in the picture☺️there r more than 10
i hope it will help u
if it help anyone please say atleast @thanks
☺️
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