Question

solve the following questions ​

Answer 1

Answer:

1. x³+5x²+3x+6x²-8x³+8

x³-8x³+5x²+6x²+3x+8

-7x³+11x²+3x+8

2. x³+3x²y+3xy²-2-(x³-2xy²+5x²y-6

x³+3x²y+3xy²-2-x³+2xy²-5x²y+6

3x²y-5x²y+3xy²+2xy²-2+6

-2x²y+5xy²+4

hope it will help you dear ☺️

Answer 2

Ans 1

$( { x}^{3} + {5}^{2} + 3x) + ( {6x}^{2} - {8x}^{3} + 8)$

$= { x}^{3} + {5x}^{2} + 3x + {6x}^{2} - {8x}^{3} + 8$

$= {x}^{3} - {8x}^{3} + {5x}^{2} + {6x}^{2} + 3x + 8$

$= - {7 x}^{3} + {11x}^{2} + 3x + 8$

Ans 2

$( {x}^{3} - {2xy}^{2} + {5x}^{2} y - 6) - ( {x}^{3} + {3x}^{2} y + {3xy}^{2} - 2)$

$= {x}^{3} - {2xy}^{2} + {5x}^{2} y - 6 - {x}^{3} - {3x}^{2} y - {3xy}^{2} + 2$

$= - {2xy}^{2} - {3xy}^{2} + {5x}^{2}y - {3x}^{2} y - 6 + 2$

$= - {5xy}^{2} + {2x}^{2} y - 4$