Answer:
10s²-6s+9
Step-by-step explanation:
C = -3 + 5s²
B = -2s + 5
2(-3 + 5s²) = -6 + 10s²
3(-2s + 5) = -6s + 15
10s² - 6s + 9
Answer:
Step-by-step explanation:
Re-read
If you would like to simplify Q + S - T, you can
do this using the following steps:<span>
Q = 7m + 3n,
R = 11 - 2m,
S = n + 5,
T = -m - 3n + 8
</span>Q + S - T = 7m + 3n + n + 5 - (-m - 3n + 8) = 7m + 3n + n + 5 + m + 3n - 8 = 8m + 7n - 3
The correct result would be <span>8m + 7n - 3.</span>