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2 years ago

Find the value of the expression: x(x-y)-y(y^2-x) for x=4 and y=2

Mathematics

1 answer:

svet-max [94.6K]2 years ago

4 0

Replacing x by 4 and y by 2, it is found that the value of the expression is of 8.

The expression given is:

$x(x - y) - y(y^2 - x)$

We want to evaluate it for x=4 and y=2, hence, we replace x by 4 and y by 2, then:

$4(4 - 2) - 2(2^2 - 4) = 4(2) - 2(0) = 8$

The value of the expression is of 8.

A similar problem, in which the objective is finding the value of an expression, is given at brainly.com/question/19548262

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3 years ago

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Answer: ( 12 , 9 )

Step-by-step explanation:

The formula for finding the coordinate of points when a line is externally divided in a given ratio is given by :

x = $\frac{p x_{2}+q x_{1}}{p+q}$

y = $\frac{p y_{2}+q y_{1}}{p+q}$

From the question

$x_{1}$ = 2

$x_{2}$ = ?

x = 4

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$y_{2}$ = ?

y = 1

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q = 4

substituting the values into the formula ,we have

x = $\frac{p x_{2}+q x_{1}}{p+q}$

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Also

y = $\frac{p y_{2}+q y_{1}}{p+q}$

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3 years ago

8(5-32) equal to and explain <br> please help

Gre4nikov [31]

You would use order of operations: PEMDAS
P(parenthesis) E(exponents) MD(multiplication/division) AS(addition/subtraction)
with MD and AS order doesnt matter.
8(5-32) you would start with inside the Parenthesis for "P" so (5-32)=(-27)
next you would go to the E but because you dont have an exponent you go to the next step with is the "MD" you have multiplication so next would be 8(-27) and 8 multiplied by -27 is: 8(-27)= -216
ANSWER: -216

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3 years ago

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Step-by-step explanation:

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3 years ago