𝑎 − 𝑏 − 𝑎^2 + 𝑏^2
𝑎 − 𝑏 − 𝑎^2 + 𝑏^2
We can write it as
= (𝑎 − 𝑏) − (𝑎^2 − 𝑏^2)
Based on the equation 𝑎^2 − 𝑏^2 = (𝑎 + 𝑏)(𝑎 − 𝑏)
We get,
= (a – b) – (a + b) (a – b)
By taking (a – b) as common
= (a – b) (1 – a – b)
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