What is the missing polynomial -(20-4x-5x2)=20-7x2

Question

asked Apr 14, 2022 198k views

2 Answers

Phenome · Answer 1 · 2022-04-16T12:09:32+0000

Answer:

? – (20 – 4x – 5x2) = 20 – 7x2, so ? = 20 – 7x2 + (20 – 4x – 5x2)

? = 20 – 7x2 + (20 – 4x – 5x2)=20-7x²+20-4x-5x²=40-12x²-4x

the answer is 40-4x-12x^2

Explanation: