Question

the value of 51²-49² is​

Answer 1

Answer:

51*51-41*41

=920

therefore answer is 920

Answer 2

Answer:

Tha answer is 200

Step-by-step explanation:

• This is a simple calculation using different methods
• Method 1 , directly use the square number and do subtraction
• 51²= 2601 and 49² = 2401
• The equation 51²-49²= 2601-2401= 200
• Method 2 is using formula for this .......
• a²-b²=(a-b)(a+b),where a=51 and b=49
• 51²-49²=(51-49)(51+49)
• =(2)(100)=200
• Using this two methods the answer will be same and the answer is 200