Answer:
6t² - 8t + 3 + (5t + 12)
We just add like terms. The squared term doesn't have a like term so it appears in the sum. The linear terms are added (-8t + 5t = -3t) and the constant terms are added (3 + 12 = 15) for our result:
Answer: 6t² - 3t + 15
Step-by-step explanation:
thirty six point five(36.5)
5 + 5 + 5
= 10 + 5
= 15
__________
5 × 3
= 5 + 5 + 5
= 15 + 5
3 × 5
3 + 3 + 3 + 3 + 3
= 6 + 6 + 3
= 12 + 3