Question

What should be added to 10- 8x-x²-7x³ to get 8x³-3x+15?

Answer 1

Answer: 15x3 + 5x + 5 + x2

Step-by-step explanation:

8x3-3x+15 - (10-8x-x2-7x3)

= 8x3-3x+15 - 10+8x+x2+7x3

= 15x3+5x+5+x2

HOPE IT HELPS YOU!!

Answer 2

Solution :-

Let A should he added to 10- 8x-x²-7x³ to get 8x³-3x+15 .

So,

→ A + (10 - 8x - x²- 7x³) = (8x³- 3x + 15)

→ A = (8x³- 3x + 15) - (10 - 8x - x²- 7x³)

→ A = 8x³ + 7x³ + x² - 3x + 8x + 15 - 10

→ A = (15x³ + x² + 5x + 5) (Ans.)

Hence, (15x³ + x² + 5x + 5) should be added to 10 - 8x - x² - 7x³ to get 8x³- 3x+15 .

Learn more :-

solution of x minus Y is equal to 1 and 2 X + Y is equal to 8 by cross multiplication method

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