plzzzzzzzz answer plz plz
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Answered by
1
Answer:
b) to expand (2p - 3q)³
Step-by-step explanation:
identity used: (a - b)³ = a³ - b³ - 3ab(a - b)
=> a = 2p and b = 3q
=> (2p)³ - (3q)³ - 3(2p)(3q) (2p - 3q)
=> 8p³ - 27q³ - 18pq (2p - 3q)
=> 8p³ - 27q³ - 36p²q + 54pq²
Answered by
0
Answer:1=4a²+4ab-8ac-4bc-4c²+b²
Step-by-step explanation:
=(-2a-b+2c)(-2a-b+2c)
=4a²+-2ab-4ac+2ab+b²-2bc-4ac-2bc+4c²
=4a²+4ab-8ac-4bc+4c²+b²
May be it is correct.
I just tried this.
Sorry if it is wrong.
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