80-5a^2 factorise this urgent
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Answered by
34
80 - 5a²
5( 16 - a² )
5( 4² - a² )
We know, x² - y² = ( x + y ) ( x - y )
=> 5( 4 - a ) ( 4 + a )
5( 16 - a² )
5( 4² - a² )
We know, x² - y² = ( x + y ) ( x - y )
=> 5( 4 - a ) ( 4 + a )
Answered by
37
Heya !!
80 - 5A²
5 ( 16 - A² )
5 { (4)² - ( A)² }
As we know that , ( A)² - (B)² = ( A + B ) ( A - B).
So,
5 { ( 4)² - (A)²
5 { ( 4 + A ) ( 4 - A ) } [ Answer ]
80 - 5A²
5 ( 16 - A² )
5 { (4)² - ( A)² }
As we know that , ( A)² - (B)² = ( A + B ) ( A - B).
So,
5 { ( 4)² - (A)²
5 { ( 4 + A ) ( 4 - A ) } [ Answer ]
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