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(4x+5) (4x-1)

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(4x+5) (4x-1)

Posted by Jyoti Saini 5 years, 3 months ago

CBSE > Class 08 > Mathematics

3 answers

Shruti ? 5 years, 3 months ago

(4x+5)(4x-1) = (x+a)(x+b) = x²+(a+b)x + ab = 4x² + (5-1)4x + 5×(-1) = 16x² + 16x -5

Yogita Ingle 5 years, 3 months ago

(4x+5) (4x-1)

4x ( 4x - 1) + 5 (4x - 1)

= 16x² - 4x + 20x - 5

=16x² + 16x - 5

Gayathri Mohanraju 5 years, 3 months ago

6x

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