Question

factorise the following expression.
$(4x - 5y)^{2} - 16z {}^{2}$
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Answer 1

Step-by-step explanation:

solution

$a {}^{2} - b {}^{2} = (a +b)(a - b)$

$= (4x - 5y) {}^{2} - (16z) {}^{2}$

Then,

$(4x - 5y) {}^{2} - (4z) {}^{2}$

Then

$(4x - 5y + 4z) \: (4x - 5y - 4z)$

hence required answer

$(4x - 5y) ^{2} - 16z {}^{2} \\ = (4x - 5y + 4z)(4x - 5y - 4z$

Hope it helps

bot time laga -,-"

Answer 2

Answer:

$(4x - 5y - 4z) \times (4x - 5y + 4z)$

Step-by-step explanation:

I hope it's useful for you!