Advertisement Remove all ads

Use the Direct Method to Evaluate : ("Z"-2/3)("Z"+2/3) - Mathematics

Sum

Use the direct method to evaluate :
`("z"-2/3)("z"+2/3)`

Advertisement Remove all ads

Solution

Note: (a+b) (a−b) = a2 − b2

`("z"-2/3)("z"+2/3)=("z")^2-(2/3)^2`

`="z"^2-4/9`

  Is there an error in this question or solution?
Advertisement Remove all ads

APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 12 Identities
Exercise 12 (A) | Q 2.09 | Page 150
Advertisement Remove all ads
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×