9𝑎^2 + 3𝑎 − 8𝑏 − 64𝑏^2
9𝑎^2 + 3𝑎 − 8𝑏 − 64𝑏^2
We can further write it as
= 9𝑎^2 − 64𝑏^2 + 3𝑎 − 8𝑏
So we get
= (3𝑎)^2 − (8𝑏)^2 + (3𝑎 − 8𝑏)
Based on the equation 𝑎^2 − 𝑏^2 = (𝑎 + 𝑏)(𝑎 − 𝑏)
We get,
= (3a + 8b) (3a – 8b) +(3𝑎 − 8𝑏)
Taking (3a – 8b) as common
= (3a – 8b) (3a + 8b + 1)
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