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1 year ago

-9x²(x²+2x²y - 3y²) Simplify

Mathematics

2 answers:

yKpoI14uk [10]1 year ago

4 0

<h2>Your answer is:</h2>

−9x^4−18x^4y+27x^2y^2

Dvinal [7]1 year ago

3 0

Answer:

=−18x^4y−9x^4+27x^2y^2

Step-by-step explanation:

(−9x^2)(x^2+2x^2y−3y^2)

=(−9x^2)(x^2+2x^2y+−3y^2)

=(−9x^2)(x^2)+(−9x^2)(2x^2y)+(−9x^2)(−3y^2)

=−9x^4−18x^4y+27x^2y^2

=−18x^4y−9x^4+27x^2y^2

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Hope I helped! Have a great day :)

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Two sevenths over two fifths = five over seven mile per hour

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<em><u>Solution:</u></em>

Given that, Suzanna walked two over seven of a mile in two over five of an hour

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Unit rate means number of miles covered in 1 hour

From given information,

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Which means,

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