Understanding the Difference of Squares

In this video, Ashu Goyal demonstrates how to solve the problem of 102 squared minus 98 squared without using a calculator. He introduces the identity formula a^2 - b^2 = (a + b)(a - b) and applies it to the given numbers. By substituting a = 102 and b = 98, he calculates the result as 800. The video concludes with a request for viewers to like and subscribe.

What mathematical identity is used to solve the problem in the video?

• a^2 + b^2

• a^2 - b^2

• a^2 / b^2

• a^2 * b^2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What are the values of 'a' and 'b' in the problem discussed?

• a = 104, b = 96

• a = 106, b = 94

• a = 102, b = 98

• a = 100, b = 90

What is the result of 102 + 98 in the solution?

• 220

• 210

• 200

• 190

Tags

CCSS.1.NBT.C.5

What is the result of 102 - 98 in the solution?

• 3

• 2

• 5

• 4

Tags

CCSS.HSA.APR.B.2

What is the final result of 102^2 - 98^2 as calculated in the video?

• 600

• 700

• 800

• 900

Tags

CCSS.HSA.APR.B.2