find the value of 1-a^2+14ab-49b^2
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Hi ,
1 - a² + 14ab - 49b²
= 1 - ( a² - 14ab + 49b² )
= 1 - [ a² - 2 × a × 7b + ( 7b )² ]
= 1² - ( a - 7b )²
= [ 1 + ( a - 7b ) ] [ 1 - ( a - 7b )]
= ( 1 + a - 7b ) ( 1 - a + 7b )
I hope this helps you.
: )
1 - a² + 14ab - 49b²
= 1 - ( a² - 14ab + 49b² )
= 1 - [ a² - 2 × a × 7b + ( 7b )² ]
= 1² - ( a - 7b )²
= [ 1 + ( a - 7b ) ] [ 1 - ( a - 7b )]
= ( 1 + a - 7b ) ( 1 - a + 7b )
I hope this helps you.
: )
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