All categories

3 years ago

If I multiplied these binomials (x - 3) + (4x + 2) what would be the final product?

Mathematics

2 answers:

zlopas [31]3 years ago

8 0

Answer: 4x^2 - 10x - 6

Step-by-step explanation:

You can use FOIL to do this. First terms, Outer terms, Inner terms, Last terms.

(x - 3)(4x + 2)

First terms: x * 4x = 4x^2

Outer terms: x * 2 = 2x

Inner terms: -3 * 4x = -12x

Last terms: -3 * 2 = -6

Now add these together:

4x^2 + 2x - 12x - 6 = 4x^2 - 10x - 6

Lelechka [254]3 years ago

5 0

Answer:

4x^2 - 10x - 6

Step-by-step explanation:

If you truly want to multiply these binomials, remove the " + " sign and replace it with " * " for multiplication:

(x - 3) (4x + 2) = 4x^2 + 2x - 6 - 12x

Combining like terms, we get 4x^2 - 10x - 6

You might be interested in

Hi, can someone help with these two questions ASAP! (Ignore the multiple choice I circled, not sure if it’s correct)

Sindrei [870]

Answer:

1) D. $y = -\frac{3}{2}\cdot x^{12} -7\cdot x^{5}+\frac{2}{3}\cdot x -10$

2) E. The coefficient of $x$ is -16.

Step-by-step explanation:

1) A polynomial is an algebraic expression of the form $p(x) = \Sigma \limits_{i = 0}^{n} c_{i}\cdot x^{i}$ , where $n$ is the grade of the polynomial. In this case, the only equation that satisfies this definition is:

$y = -\frac{3}{2}\cdot x^{12} -7\cdot x^{5}+\frac{2}{3}\cdot x -10$

Correct answer: D

2) Let $p(x) = (2\cdot x + 1) \cdot (5\cdot x^{3}-8\cdot x +4)$ , we proceed to expand the expression by algebraic means:

$p(x) = (2\cdot x + 1)\cdot (5\cdot x^{3}) -(2\cdot x +1)\cdot (8\cdot x) + 4\cdot (2\cdot x + 1)$

$p(x) = 10\cdot x^{4}+5\cdot x^{3}-16\cdot x^{2}+4$

We see that coefficients for $x^{2}$ and $x$ are -16 and 0, respectively. Hence, the incorrect answer is E.

3 0

3 years ago

Which of the following is NOT a tax collected by the federal government? A. sales tax B. excise tax C. income tax D. payroll tax

Usimov [2.4K]

I believe the answer is B "excise tax" I think its this answer because I know that the goverment charges income tax, payroll tax, and sales tax.

4 0

3 years ago

Read 2 more answers

This is for middle school 9th grade please help me :)

Stolb23 [73]

Answer:

i think it's undefined

Step-by-step explanation:

7 0

2 years ago

PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Aneli [31]

80 + 60 + y = 180 and if y and x are vertical angles y = x

3 0

3 years ago

Read 2 more answers

The coordinates of point R are (-6,4) The coordinates of point S are (3,4) Witch expression represents the distance, in units, b

trapecia [35]

Answer:

A) |-6| + |3|

Step-by-step explanation:

Since the y-coordinates are the same, we need to find the distance between -6 and 3. This would thus be equal to |-6|+|3| making A the correct answer.

5 0

2 years ago