Question

Hasil dari perkalian aljabar berikut adalah
a. 7 (× - 3)
b. (× + 2) (× - 3)
c. (3× - 1) ( × + 5)
d. (× + y) (× + y)
e. (× - y) (× - y)
f. (× + y) (× - y)

Answer 1

A. 7(x-3)
= 7x-21

b. (x+2) (x-3)
= x²-3x+2x-6
= x²-x-6

c. (3x-1) (x+5)
= 3x²+15x-x-5
= 3x²+14x-5

d. (x+y) (x+y)
= x²+xy+xy+y²
= x²+ 2xy + y²

e. (x-y) (x-y)
= x²-xy-xy+y²
= x²-2xy + y²

f. (x+y) (x-y)
= x²-xy+xy-y²
= x²-y²