factorise (3-4y-7y^2)^2 - (4y+1)^2
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Answer:
Let's simplify step-by-step.
(3−4y−7y2)2−(4y+1)2
Distribute:
=49y4+56y3+−26y2+−24y+9+−16y2+−8y+−1
Combine Like Terms:
=49y4+56y3+−26y2+−24y+9+−16y2+−8y+−1
=(49y4)+(56y3)+(−26y2+−16y2)+(−24y+−8y)+(9+−1)
=49y4+56y3+−42y2+−32y+8
Answer:
=49y4+56y3−42y2−32y+8
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