Question

find the following products by using identities
1) ( x+2) ( x-2)
2) ( 3x+5) ( 3x-5) ​

Answer 1

Answer:

(1) (x)²-(2)² = x² - 4

(2) (3x)²+(5)²-2(3x×5) = 9x²+25-30x

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