Question

(4x+5y)(4x-5y)(16x^2+25y^2)​

Answer 1

$Given \: (4x+5y)(4x-5y)(16x^2+25y^2)$

$= [(4x)^{2} - (5y)^{2} ] (16x^{2} + 25y^{2} )$

/* By algebraic identity */

$= (16x^{2} - 25y^{2}) (16x^{2} + 25y^{2} )$

$= (16x^{2})^{2} - (25y^{2})^{2}$

$= 256x^{4} - 625y^{4}$

Therefore.,

$\red{(4x+5y)(4x-5y)(16x^2+25y^2)}$

$\green {= 256x^{4} - 625y^{4}}$

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Answer 2

Answer:

256x⁴- 625y⁴

Step-by-step explanation:

$hope \: its \: help \: you$