Answer:
4a^2-6b^2+12
Step-by-step explanation:
(a^2 - 2b^2 + 3) - (4b^2 - 5) + (3a^2 + 4)
distribute the negative sign to each term in the 2nd expression
a^2-2b^2+3-4b^2+5+3a^2+4
combine like terms
4a^2-6b^2+12
Answer:
669 dollars and 70 cents
Step-by-step explanation:
just minus all the money spent and add the money added
Answer:
they both = 100
Step-by-step explanation:
42 = 2 * 3 * 7
So, <span>the combination for the lock is 237</span>
