Sederhanakan variabel berikut! A.(2a+3b-5c) + (4q-5b+7c) B.3 (x+5y-7) - (3x-7y+5) C.3 (y²-3) +5 (2x-7y+5) D.-2(p³-2pq+q³) +2 (p³ + 4pq +5q³ -7) Tolong bantu ku
Matematika
yenisarif35
Pertanyaan
Sederhanakan variabel berikut!
A.(2a+3b-5c) + (4q-5b+7c)
B.3 (x+5y-7) - (3x-7y+5)
C.3 (y²-3) +5 (2x-7y+5)
D.-2(p³-2pq+q³) +2 (p³ + 4pq +5q³ -7) "Tolong bantu " kumpul besok!
A.(2a+3b-5c) + (4q-5b+7c)
B.3 (x+5y-7) - (3x-7y+5)
C.3 (y²-3) +5 (2x-7y+5)
D.-2(p³-2pq+q³) +2 (p³ + 4pq +5q³ -7) "Tolong bantu " kumpul besok!
1 Jawaban
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1. Jawaban 2idha
a. (2a+3b-5c) + (4a-5b+7c)= (2+4)a + (3-5)b+(-5+7)c=6a-2b+2c
b. 3 (x+5y-7) - (3x-7y+5)=3x+15y -21-3x+7y-5= (3-3)x+(15+7)y -(21+5)
= 22y-26
c. -2(p³-2pq+q³ ) +2 (p³ + 4pq +5q³ -7)=-2p3 +4pq -2q3+2p3+8pq+10q3-14
= (-2+2)p3 +(4+8)pq+(-2 +10)q3-14
= 12pq +8q3- 14