Answer:
ni
Explanation:
8√45 +2√50 - 3√147
= 8×3√5 + 2×5√2 - 3×7√3
= 24√5 + 10√2 - 21√3
Work done by fuel is chemical energy and work done by a moving object is kinetic energy.
it's number 3 for b and 1 for a