Answer:
Step-by-step explanation:

Answer: 30x⁴
Step-by-step explanation:
2x⁴ + (-3x²)² + 10(x²)² + (-3x²)²
2x⁴ + (9x⁴) + 10 (x⁴) + (9x⁴)
2x⁴ + 9x⁴ + 10x⁴ + 9x⁴
2x⁴ + 10x⁴ 9x⁴ + 9x⁴
12x⁴ + 18x⁴
30x⁴
(-x)² = x²
(xᵃ)ᵇ = xᵃᵇ
Hope I helped!
3.5 kg:800g
3500g:800g
35g:8g
The answer for one thousand minus seven is 993
Step-by-step explanation:
115 = 5x + 15
115 - 15 = 5x
100 = 5x
20 = x