(3y+5x-7)(x-1)-(y-2x+3)(x+4)
Answers
Answered by
0
Answer:
3xy-3y+5xsquare-5x-7x+7-xy-4y+2xsquare+8x-3x-12
2xy-7y+7xsquare-7x-5
Answered by
2
Answer:
2xy+7x²-x-7y-5
Step-by-step explanation:
(3y+5x-7)(x-1)-(y-2x+3)(x+4)
= [x(3y+5x-7)-1(3y+5x-7)] - [x(y-2x+3)+4(y-2x+3)]
= [3xy+5x²-7x-3y-5x+7] - [xy-2x²+3x+4y-8x+12]
= 3xy+5x²-7x-3y-5x+7-xy+2x²-3x-4y+8x-12
= 3xy-xy+5x²+2x²-7x-5x+3x+8x-3y-4y-12+7
= 2xy+7x²-x-7y-5
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