Question

Dijawab pake cara sma cara penyusunannya

1. a.(5m - 1)(2m + 4)
b.(x + y)(3*2 + xy + 2y*2)
c.ab(a + 2b - c)

Answer 1

1. a.(5m - 1)(2m + 4)
= (5m.2m) + (5m.4) - (1.2m) - (1.4)
= 10 m^2 + 20m - 2m - 4
= 10 m^2 + 18m - 4

b.(x + y)(3x^2 + xy + 2y^2)
= (x.3x^3) + (x.xy) + (x.2y^2) + (y.3x^2) + (y.xy) + (y.2y^2)
= 3x^3 + x^2 y + 2y^2 x + 3x^2 y + xy^2 + 2y^3
= 3x^3 + 4x^2 y + 3xy^2 + 2y^3

c.ab(a + 2b - c)
= (ab.a) + (ab.2b) - ab.c
= a^2 b + 2ab^2 - abc

ket
. = kali
^ = pangkat

Semoga membantu ^^