a² - 4a + 3 + 2b - b² ,. factorize it , those who will answer I will mark as brainleist .
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Step-by-step explanation:
a² -4a + 3 +2b - b²
= a² - 4a + 4 - 1 + 2b - b²
= (a - 2)² - { b² -2b +1 }
= (a -2)² - (b -1)²
[ use, formula, x² - y² = (x - y)(x + y) ]
=(a -2 - b +1 )(a -2 + b -1)
=(a - b -1)(a + b -3)
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