Find the product -5y(xy+y^2) and find its value for x=4 and y=5
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Answer:
Step-by-step explanation:
Given that,
x = 4 and y = 5
- 5y ( 4xy + y² )
= - 20xy² - 5y³ (∵ - × + = - )
Now substituting x and y values in the above equation
= - 20 ( 4 ) ( 5 )² - 5 ( 5 )³
= - 20 ( 4 ) ( 25 ) - 5 ( 125 )
= - 2000 - 625
= - 2625 is the answer.
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