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<h3>Answer :</h3>
The factor of (x + y)³- (x³ + y³) is <u>3xy</u>
<h3>Step By Step Solution :</h3>
→ (x + y)³- (x³ + y³)
→ (x + y) - (x + y)(x² - xy + y²) [Using identity a³ + b³ = (a + b)(a²- ab+ b²)]
→ (x + y)(x² + y² + 2xy - x² + xy - y²)[Using identity, (a + b)² = (a² + b²+ 2ab)]
→ (x + y) (3xy)
→ 3xy
∴ Option d. 3xy is correct!
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All I know is that you should multiply than add all of the products
Answer:
$64
Step-by-step explanation:
Remaining money = 1 - fraction spent
Remaining money = 1 - (1/4 + 1/8)
Remaining Money = 1 - 3/8
Remaining Money = 5/8
$40 = 5/8 of Starting amount
Starting amount = $40 * 8/5
Starting amount = $64
First multiply 5 * 5 because PEMDAS
34 + 5 * 5
34 + 25
Now add
34 + 25
59
Use the equation for the volume of a cone to solve for the height:
