1)
a) (x+3) (x-3) = x² - 9
b )(2x² -5) (2x² +5) = 4x^4 - 25
2) 7 - 2
5
3) 36 - 5
31
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1)
a) (x+3) (x-3) = x² - 9
b )(2x² -5) (2x² +5) = 4x^4 - 25
2) 7 - 2
5
3) 36 - 5
31