Answer:
128y^2 - 20y - 64y + 20y
= 128y^2 - 64y
= 2y^2 - y
-10 • (6y - 1)
Explanation:
1 - 4y - 2 • (32y - 5)
2 - Pull out like factors : 10 - 60y = -10 • (6y - 1)
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