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1) (3x-5)^2 2) (3xy-1/3)^2
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4 votes
1) (3x-5)^2
2) (3xy-1/3)^2

User JKG
by
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1 Answer

3 votes

1)

=(3x)² - 2 × 3x × 5+5²

=3²x²2 × 3x × 5+5²

=9x² -2 × 3x × 5 + 5²

=9x² -2 x 3x x 5 + 25

=9x²30x + 25

User Toure
by
3.3k points
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