(a)

(b)we have 4 terms in this expression.
(c)+12 is the leading coefficient in

(d) constant is -45
Answer:
300000 × 300000
Step-by-step explanation:
You add zeros to the number without the exponent (in this case '3') based on the exponent number (in this case '5').
Answer:
90
Step-by-step explanation: