(3 x + 4y-11)(5x-3y-8)
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Answer:
= 3x (5x-3y-8) + 4(5x-3y-8) - 11(5x-3y-8)
= 15x - 3xy -24 +20x -12y -32 - 55x + 33y + 88
= 15x + 20x - 55x - 3xy - 24 -32 + 88 - 12y + 33y
= -20 - 3xy + 32 + 21y
= -20 + 32 -3xy +21y
= 2( -10 + 16 ) -3y( x - 7)
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