e2

1. ใบงานที่ 1 เรื่อง การบวกลบเอกนาม
ผลการเรียนรู้ข้อที่ 4 หาผลบวกและผลลบของเอกนามและพหุนามได้
คาสั่ง จงหาผลลัพธ์ต่อไปนี้
1. 5xy + 7xy – 3xy
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2. 15abc – 18abc + 9abc
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3. (–10x2
y3
) + 5x2
y3
– 9x2
y3
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4. 18p3
q4
– (–5p3
q4
) + 10p3
q4
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5. 6m2
n + m2
n – (– m2
n)
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2. 6. (–2xyz) – (–20xyz) + (–9xyz)
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7. (5xy – 9xy) + (–13xy – 7xy)
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8. (–14a2
b – 9 a2
b) – (–3a2
b + 6a2
b)
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9. 8m3
– (6m3
– 9m3
) + 15m3
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10. (7y4
– 9y4
) + (15y4
– 13y4
)
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