Diketahui A=4x + y dan B=2x -5y.tentukan hasil operasi berikut.
a. A + B
b. A - B
c. A +4B
d. 3A - 2B
a. A + B
b. A - B
c. A +4B
d. 3A - 2B
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= 6x - 4y
b. (4x + y) - (2x - 5y)
= 4x + y - 2x + 5y
= 2x + 6y
c. 4x + y + 4(2x - 5y)
= 4x + y + 8x - 20y
= 12x - 19y
d. 3(4x + y) - 2(2x - 5y)
= 12x + 3y - 4x + 10y
= 8x + 13y