40 I'm not quite sure but I think that might be the ANWSER!
Answer:
1:
×
2: 
Step-by-step explanation:
1:
Multiply the numbers: 

Write it without exponents:
so
.
2:

Apply exponent rule :
assuming 


Multiply the numbers: 

Hope I helped! If so, may I get Brainliest and a Thanks?
Thank you, have a good one! =)
<span>(1.3t3 + 0.4t2 – 24t) + (8 – 18t + 0.6t2)
In adding polynomials, make sure that each term is grouped together.
1.3t</span>³ + 0.4t² - 24t
<u> + 0.6t² - 18t + 8</u>
1.3t³ + 1.0t² - 42t + 8
In a polynomial equation, arrangement of each term is dependent on the exponential number. It should be from the highest exponent to the lowest.