which of the following is the correct expansion of( 2a-4b+c)²
2a²+4b²+c²-8ab-4bc+2ac
2a²+4b²+c²-16ab-8bc+4ac
4a²+16b²+c²-16ab-8bc+4ac
Answers
Answered by
0
Answer:
4a²+16b²+c²-16ab-8bc+4ac
Answered by
0
Answer:
4a² + 16b² + c² - 16ab + 4ac - 8bc
Option 4
Step-by-step explanation:
( 2a-4b+c)² = ( 2a-4b+c) × ( 2a-4b+c)
= 4a² - 8ab + 2ac - 8ab + 16b² - 4bc + 2ac - 4bc + c²
= 4a² + 16b² + c² - 16ab + 4ac - 8bc
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