Combine like terms to create an equivalent expression: 4z-(-3z)

2 answers:

3 0

The answer is: " 7z " .
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<u>Note</u>: " 4z - (-3z) = ? " ;

Note that "subtracting a negative" is the same thing as "adding a positive" ;

→ " 4z - (-3z) = 4z + 3z = 7z .
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The answer is: " 7z " .
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charle [14.2K]2 years ago

3 0

7z. 2 negs make a pos. But two wrongs do not make a right.

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Finding Derivatives Implicity In Exercise,Find dy/dx implicity.<br> x2e - x + 2y2 - xy = 0

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"Finding Derivatives Implicity In Exercise,Find dy/dx implicity . $x^{2}e^{-x}+2y^{2}-xy$ "

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Step-by-step explanation:

From the expression $x^{2}e^{-x}+2y^{2}-xy$ " y is define as an implicit function of x, hence we differentiate each term of the equation with respect to x.

we arrive at

$\frac{d}{dx}(x^{2}e^{-x )+\frac{d}{dx} (2y^{2})-\frac{d}{dx}xy=0\\$

for the expression $\frac{d}{dx}(x^{2}e^{-x})$ we differentiate using the product rule, also since y^2 is a function of y which itself is a function of x, we have