Question

9 एक्स स्क्वायर प्लस माइनस के एक​

Answer 1

Step-by-step explanation:

I think your question is

9x^2-1

in the above equation we apply the formula

a^2- b^2 = (a+b). (a-b)

so, (3x)^2 - 1 ^2

=(3+1) (3-1)

=4× 2

=8

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