( 3k + 4 )( k - 2y + 3 ) = Saya kurang mengerti tolong dibantu

3k^2 + 6ky+9k+4k-8y+12

3k^2 + 6 ky+ 13k-8y+12

( 3k + 4 )( k - 2y + 3 ) =
(3k)(k) + (3k)(-2y) + (3k)(3) + (4)(k) + (4)(-2y) + (4)(3) =
3k² - 6ky + 9k +4k -8y + 12 =
3k² - 6ky + 13k - 8y + 12
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maaf kalau salah
semoga membantu