expand (3x-1)(3x+3)
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(3x-1)(3x+3)
=9x²+9x-3x-3
=9x²+6x-3 is the answer
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Step-by-step explanation:
(x-a)(x-b)= x²+ (a+b)x+ab (Identity)
=9x²+ (-1+3)x+(-1)×3
=9x²+2x-3
Hope it helps ☺️
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