Question

$25k {}^{2} - 16$
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Answer 1

Answer:

$25k^2 - 16$ $=(5k + 4)(5k - 4)$

Step-by-step explanation:

$25k^2 - 16$

$=(5k)^2 - 4^2$

$=(5k + 4)(5k - 4)$  [using the identity $a^2 - b^2 = (a + b)(a - b)$]