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Any one can help me to solve this que​

Answer»

ANSWER is written bellow.

Step-by-step explanation:

(a^2-9)*40

= {a^2-(3^2)}*40

= {(a-3)^2}*40

= {a^2+3^2-2a3}*40

= {a^2 + 9 -6a }*40

= 40a^2 - 240a + 360 answer

I hope it is useful for you so plz mark me as brainlist answer.


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