simplify: (a + b +c)(a + b – c)+7
Answers
Answered by
0
Solution :
**********************************
We know the algebraic identity:
( x + y )( x - y ) = x² - y²
**********************************
Here ,
( a + b + c )( a + b - c ) + 7
= ( a + b )² - c² + 7
= a² + b² + 2ab - c² + 7
= a² + b² - c² + 2ab + 7
•••••
**********************************
We know the algebraic identity:
( x + y )( x - y ) = x² - y²
**********************************
Here ,
( a + b + c )( a + b - c ) + 7
= ( a + b )² - c² + 7
= a² + b² + 2ab - c² + 7
= a² + b² - c² + 2ab + 7
•••••
Answered by
0
Hey there!
Answer:
a² + b² -c² +2ab + 7
Step-by-step explanation:
Given,
(a+b+c)(a+b-c) + 7
= (a+b)² - c² + 7 {∵(a+b)(a-b) = a² - b²}
= a² + b² + 2ab - c² + 7
= a² + b² -c² +2ab + 7
Hope iT helps You!
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