Question no. 18 ................?????????
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1
Answer:
7a2-13ab-7b2
Step-by-step explanation:
4a2-7ab-4b2+1to subtract
3a2-6ab-3b2-1
then 1 of subtract
then
from subtract
4a2-7ab-4b2+1
3a2-3ab34a2-1
then
=7a2-13ab-7b2
Answered by
1
Step-by-step explanation:
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