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If a=3i-7j and b=5i+2j, find a-b A.2i-9j B.2i-5j C.8i-5j D.8i-9j Please explain how you solve this because i am confused
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If a=3i-7j and b=5i+2j, find a-b

A.2i-9j
B.2i-5j
C.8i-5j
D.8i-9j

Please explain how you solve this because i am confused

User Aloso
by
7.8k points

1 Answer

1 vote

Answer:

- 2i - 9j

Explanation:

a - b

= 3i - 7j - (5i + 2j) ← distribute

= 3i - 7j - 5i - 2j ← collect like terms

= - 2i - 9j

None of the answers on your list

User Mayrs
by
8.3k points
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