square of 2a2 - 3b2
please answer
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Answer:
4a^4 - 12a^2b^2 + 9b^4
Step-by-step explanation:
( 2a^2 - 3b^2 )^2
= (2a^2)^2 - [2.(2a^2).(3b^2)] + (3b^2)^2
= 4a^4 - 12a^2b^2 + 9b^4
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