Question

25n²-kp²=(kn+9p)(5n-9p) find the value of k

Answer 1

Answer:

I don't understand the question

Answer 2

/* There is a mistake in the question. It must be like this */

$25n^{2} - kp^{2} = ( 5n+9p )(5n - 9p)$

$\implies 25n^{2} - kp^{2} = ( 5n)^{2}-(9p )^{2}$

$\boxed{\pink{ \because (a+b)(a-b) = a^{2} - b^{2} }}$

$\implies 25n^{2} - kp^{2} = 25n^{2}- 81p^{2}$

/* Compare bothsides, we get */

$k = 81$

Therefore.,

$\red{ Value \:of \: k } \green { = 81 }$

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