Answer:
12x⁹ + 15x⁸ - 8x⁶ - 10x⁵
Step-by-step explanation:
<u>Solution with steps, expand to get the polynomial:</u>
y = -8x+2020
8x + y = 2020
Subtract 8x from each side
8x-8x + y = -8x+ 2020
Answer: 23.80
330 = 21x + 75
x+129=592
add 129 to each side