9x^4 -225y^8
= 9(x^4 - 25y^8)
= 9(x^2 + 5y^4)(x^2 - 5y^4)
Answer:
45$ per house cleaned
Step-by-step explanation:
135$ / 3 houses = 45
225$/ 5 houses = 45
Gave away 7 ⇒ -7
Bought 6 ⇒ + 6
Left with 13
If he did not buy the 6 cars ...
13 - 6 = 7
If he did not give the 7 cars away ...
7 + 7 = 14
He has 14 cars at first.
13 - 6
Step-by-step explanation:
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<u>2</u><u>(</u><u>-</u><u>2</u><u>)</u><u>+</u><u>3</u>
<u>-</u><u>1</u><u> </u><u>answer</u>