Factorize:
a(a-1) -b (b-1) plzzzz do it fast :)
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Answered by
4
★ REDUCTION TO FACTORS ★
☣ a(a - 1 ) -b(b -1) =
☣ a² - a - b² + b =
☣ a² - b² + (b - a) =
( a + b ) ( a- b ) - ( a - b ) =
(a - b) [ a + b - 1 ]
★✩★✩★✩★✩★✩★✩★✩★✩★✩★✩★
☣ a(a - 1 ) -b(b -1) =
☣ a² - a - b² + b =
☣ a² - b² + (b - a) =
( a + b ) ( a- b ) - ( a - b ) =
(a - b) [ a + b - 1 ]
★✩★✩★✩★✩★✩★✩★✩★✩★✩★✩★
Nightmare1069:
thank you so much
YOU'RE MOST WELCOMED :)
Answered by
3
Hi
here is your answer
given,
a ( a - 1 ) - b ( b - 1 )
=> a² - a - b² + b
=> a² - b² - a + b
=> ( a - b ) ( a + b ) - ( a - b ) [ °.° a² - b² = ( a - b ) ( a + b ) ]
=> ( a - b ) ( a + b - 1 )
===================================
here is your answer
given,
a ( a - 1 ) - b ( b - 1 )
=> a² - a - b² + b
=> a² - b² - a + b
=> ( a - b ) ( a + b ) - ( a - b ) [ °.° a² - b² = ( a - b ) ( a + b ) ]
=> ( a - b ) ( a + b - 1 )
===================================
Thank you
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