IV. Answer the following
1. a) Subtract: 9xy(2x* - 3) from 15x(xy + 5).
b) Multiply: 7xyand (2x + 5x+y - 1).
1. a) Subtract: 9xy(2x* - 3) from 15x(xy + 5).
b) Multiply: 7xyand (2x + 5x+y - 1).
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Step-by-step explanation:
15x(xy+5)-[9xy(2x*-3) ]
=15x²y+75x-(18x²y-27xy)
=15x²y+75x-18x²y-27xy
=15x²y-18x²y+75x-27xy
=-3x²y+75x-27xy
Answer:
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Step-by-step explanation:
a) 15x(xy + 5)-9xy(2x - 3)
15x²y+75x-18x²y+27xy
-3x²y+75x+27xy
-3(x²y-25x-9xy)
b) 7xy*(2x+5x+y+1)
14x²y+35x²y+7x²y+17xy
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