Question

Sederhanakanlah bentuk aljabar berikut

A. 2(x²+xy+y²)+4(x²-2xy+y²)

B. -4(x²+y)-2(x²-y)

C. -3(4a²b+3ab²)+2(-9a²b-4ab²)

Answer 1

A. 2(x²+xy+y²)+4(x²-2xy+y²)=
= 2x²+2xy+2y²+4x²-8xy+4y²
= 6x²-6xy+6y²
B. -4(x²+y)-2(x²-y)=
= -4x²-4y-2x²+2y
= -6x²-2y
C. -3(4a²b+3ab²)+2(-9a²b-4ab²)=
= -12a²b-9ab²-18a²b-8ab²
= -30a²b-17ab²