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3 years ago

What is the product? (-2x -9y^2) (-4x -3)

Mathematics

2 answers:

vesna_86 [32]3 years ago

5 0

Answer:

$8x^2+6x+36xy^2+27y^2$

Step-by-step explanation:

Given expression,

$(-2x -9y^2)(-4x -3)$

By associative property,

$=-2x(-4x -3)-9y^2(-4x -3)$

Again by associative property,

$=-2x(-4x)-2x(-3)-9y^2(-4x)-9y^2(-3)$

$=8x^2+6x+36xy^2+27y^2$

Hence,

$(-2x -9y^2)(-4x -3)=8x^2+6x+36xy^2+27y^2$

svlad2 [7]3 years ago

3 0

Your product would be:

8x^2+6x+36xy^2+27y^2

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3 years ago

What is the solution for m >7/12

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Answer:

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3 years ago

QUESTION 1 of 10: A Stadium sold 4,000 tickets at $75 ticket, 5,350 tickets at $62/ticket and 7,542 tickets at $49/ticket. What

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Answer:

£1,001,258

Step-by-step explanation:

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2 years ago

Read 2 more answers

Which of the following observations of children is the most objective?

Ivan

I'd say D. A uses words that suggest the author has an opinion of Alex's behavior that is unfavorable. B uses the words "obviously less disciplined" to refer to Sue, which is clearly an opinion and also rather unfavorable. C makes assumptions as to Joan's emotions toward Mary, which cannot be ascertained objectively without asking Joan. D is a clear statement of the facts without embellishment.

EDIT: Note that the definition of objective is not influenced by opinions or beliefs, as opposed to subjective.

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3 years ago

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Factor the expression below. 9x^2-1 A. (3x - 1)(3x - 1) B. (3x - 1)(3x + 1) C. (x - 1)(9x - 1) D. (x - 1)(9x + 1)

aliya0001 [1]

Answer:

(3x + 1) • (3x - 1)

Step-by-step explanation:

Step by Step Solution

More Icon

STEP

Equation at the end of step 1

3 ${}^{2}$ x ${}^{2}$ - 1

STEP

Trying to factor as a Difference of Squares:

2.1 Factoring: 9x ${}^{2}$ -1

Theory : A difference of two perfect squares, A ${}^{2}$ - B ${}^{2}$ can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A ${}^{2}$ - AB + BA - B2 =

A ${}^{2}$ - AB + AB - B2 =

A ${}^{2}$ - B2

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression.

Check : 9 is the square of 3

Check : 1 is the square of 1

Check : x ${}^{2}$ is the square of x1

Factorization is : (3x + 1) • (3x - 1)

Final result :

(3x + 1) • (3x - 1)

6 0

2 years ago