Question

subtract

(i) 6x³-7x²+5x - 3 from 4 - 5x + 6x² -8x³

(ii) -x²- 3z from 5x²-y+z+7

(iii) x² +2x²y + 6xy²-y from y³- 3xy² - 4x²y​

Answer 1

Answer:

(i.) 6x³-7x²+5x - 3 from 4 - 5x + 6x² -8x³

= 6x³-7x²+5x - 3 from -8x³+6x²-5x+4

-8x³+6x²-5x+4

6x³-7x²+5x - 3

- + - +

____________

-14x³+13x²-10x+7

ii) -x²- 3z from 5x²-y+z+7

5x²-y+z+7

-x² - 3z

+ +

________

6x²-y+4z+7

(iii) x² +2x²y + 6xy²-y from y³- 3xy² - 4x²y

y³- 3xy² - 4x²y

x² + 6xy²+2x²y -y

- - - +

______________

y³-x²-9xy²-6x²y+y