Question

what should be subtracted from 8x^2+7x+15 to get 13x^2+14x-5?
answer step by step​

Answer 1

Answer:

- 5x²-7x+20

Solve :

Let k be subtracted from 8x²+7x+15 to get 13x²+14x-5

Therefore,

8x²+7x+15 - k = 13x²+14x-5

=> 8x²+7x+15 - (13x²+14x-5) = k

=> 8x²+7x+15 - 13x²-14x+5 = k

=> - 5x²-7x+20 = k

=> k = - 5x²-7x+20