hasil sederhana dari: a. 3(2a+5)= b.2a(3a-1)= c. 4(a+2b-c)= d. -3(2p+9-8)= tolong di jawab secepatnya yah, tolong!

a) 3(2a + 5) = (3 x 2a) + (3 x 5) = 6a + 15
b) 2a(3a-1) = (2a x 3a) - (2a x 1) = 6a² - 2a
c) 4(a+2b-c) = (4 x a) + (4 x 2b) - (4 x c) = 4a + 8b - 4c
d) -3(2p+9-8) = (-3 x 2p) + (-3 x 9) - (-3 x 8) = -6p - 27 + 24 = -6p - 3