Mathmatical Equations to know

1. a(b+c) = ab + ac 2. (a+b)2 = a2 + 2ab + b2 3. (a-b)2 = a2-2ab + b2 4. (a+b)2 = (a-b)2 + 4ab 5. (a-b)2 = (a+b)2 – 4ab 6. (a-b) (a+b) = a2 – b2 7. (a+b)3 = a3 + 3ab(a+b) + b3 8. (a-b)3 = a3 – 3ab(a-b) – b3 9. a3 + b 3 = (a+b) (a2 – ab + b2) 10. a3 – b 3 = (a-b) (a2 + ab + b2) 11. (a3 – b3) / (a2 + ab + b2) More...

by admin | Published 5 years ago
By admin On Thursday, February 23rd, 2012
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Algebra Formulas

 Adding Rules: Positive + Positive = Positive: 5 + 4 = 9 Negative + Negative = Negative: (- 7) + (- 2) = – 9 Sum of a negative and a positive number: Use the sign of the larger number and subtract (- 7) + More...

By admin On Friday, June 17th, 2011
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Mathematics Club-Common Formulas

Common Formulas CIRCUMFERENCE Circle: C = πd, in which π is 3.1416 and d the diameter. AREA Triangle: A = (ab)/2 , in which a is the base and b the height. Square: A = a2, in which a is one of the sides.  More...

By admin On Friday, March 18th, 2011
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Numerical Ability Questions for Exams

Number Sequences- find the missing number in a sequence of numbers 1. Find the next number in the series 4     8     16     32     — A) 48     B) 64     C) 40      D) 46 2. Find the next More...

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