1. Jika A=2x+y dan B=3x-4 tentukan:
a) A-B
b) B-A
c) A+B
2. Sederhanakanlah Bentuk Aljabar berikut:
a) a²+2ab-3b²-7a²-5ab
b) x²-x-6+3x²-xy
c) 3p³-2pq²+p²q-7p³+2²q
d) (2x+8)+(4x-5-5y)
e) (3p+q)+(-2p-5q+7)
f) (3x²+2x-1)+(x²-5x+6)
g) 2(x+2y-xy)+5(2x-3y+5xy)
Mohon dijawab ya beserta caranya
a) A-B
b) B-A
c) A+B
2. Sederhanakanlah Bentuk Aljabar berikut:
a) a²+2ab-3b²-7a²-5ab
b) x²-x-6+3x²-xy
c) 3p³-2pq²+p²q-7p³+2²q
d) (2x+8)+(4x-5-5y)
e) (3p+q)+(-2p-5q+7)
f) (3x²+2x-1)+(x²-5x+6)
g) 2(x+2y-xy)+5(2x-3y+5xy)
Mohon dijawab ya beserta caranya
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a) A-B = (2x+y) - (3x-4) = 2x-3x+y+4 = -x+y+4
b) B-A =(3x-4) - (2x+y) = 3x-2x-y-4 = x-y-4
c) A+B = (2x+y) + (3x-4) = 2x+3x+y-4 = 5x+y-4
2. Sederhanakanlah Bentuk Aljabar berikut:
a) a²+2ab-3b²-7a²-5ab = a²-7a²+2ab-5ab-3b² = -6a²-3ab-3b²
b) x²-x-6+3x²-xy = x²+3x²-x-xy-6 = 4x²-x-xy-6
c) 3p³-2pq²+p²q-7p³+2²q = 3p³-7p³+p²q+2²q-2pq² = -4p³+3p²q-2pq²
d) (2x+8)+(4x-5-5y)= 2x+4x-5y+8-5 = 6x-5y+3
e) (3p+q)+(-2p-5q+7)= 3p-2p+q-5q+7= p-4q+7
f) (3x²+2x-1)+(x²-5x+6)= 3x²+x² +2x-5x-1+6 = 4x² - 3x + 5
g) 2(x+2y-xy)+5(2x-3y+5xy) = 2x+4y-2xy+10x-15y+25xy = 2x+10x+4y-15y-2xy+25xy = 12x-11y+23xy