Answer:
(5x + 7y)(25x² - 35xy + 49y²)
Step-by-step explanation:
125x³ + 343y³ ← is a sum of cubes and factors in general as
a³ + b³ = (a + b)(a² - ab + b² )
125x³ = (5x)³ ⇒ a = 5x
343y³ = (7y)³ ⇒ b = 7y
125x³ + 343y³
= (5x + 7y)((5x)² - (5x × 7y) + (7y)²)
= (5x + 7y)(25x² - 35xy + 49y²) ← in factored form
<span> -7 -7
------------------- = ---------------------
x^2 -2x -15 (x - 5)(x + 3)
x </span>≠ 5 and x ≠ -3
answer
<span>-3 and 5</span>
Answer:
very easy
Step-by-step explanation:
(10-7)x4
3x4=12
hope it helps you
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Answer:
Step-by-step explanation:
Given
-- principal
--- rate
--- compounded once a year
Required
Determine the function for compound interest
Compound interest f(t) is calculated as:
So, we have:
