Question

2(4n-5)(6n+7)
coba jelasin caranya

Answer 1

2(4n-5)(6n+7)
= 2(24n^2+28n-30n-25)
=2(24n^2-2n-25)
=48n^2-4n-50

Answer 2

2(4n-5)(6n+7)
= 2{(4n x 6n) + (4n x 7) + (-5 x 6n) + (-5 x 7)}
= 2(24n² + 28n - 30n - 35)
= 2(24n² - 2n - 35)
= 48n² - 4n - 70