(4x+5)(4x+1) use the identity
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(x + a) (x + b) = x² + (a+b) x + ab
(4x -5) (4x - 1) = (4x)² + (-5 -1) 4x + (-5 × -1)
= 16x² -24x +5
hence solved....
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(4x -5) (4x - 1) = (4x)² + (-5 -1) 4x + (-5 × -1)
= 16x² -24x +5
hence solved....
mark me as brainleist
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