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A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
Simplify: (a - b) (a² + b² + ab) - (a + b) (a² + b² - ab)
Solution:
Given, (a - b) (a² + b² + ab) - (a + b) (a² + b² - ab)
⇒ [a³ + ab² + a²b - ba² - b³ - ab²] - [a³ + ab² - a²b + ba² + b³ - ab²]
= [a³ - b³]-[a³ + b³]
= - 2b³
✦ Try This: Simplify: (a - b) (a² + b² + ab) + (a + b) (a² + b² - ab)
Given, (a - b) (a² + b² + ab) + (a + b) (a² + b² - ab)
⇒ [a³ + ab² + a²b - ba² - b³ - ab²] + [a³ + ab² - a²b + ba² + b³ - ab²]
= [a³ - b³] + [a³ + b³]
= 2a³
☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 9
NCERT Exemplar Class 8 Maths Chapter 7 Problem 84(ix)
Simplify: (a - b) (a² + b² + ab) - (a + b) (a² + b² - ab)
Summary:
Simplifying (a - b) (a² + b² + ab) - (a + b) (a² + b² - ab) we get, - 2b³
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