MATHEMATICS HIGH SCHOOL

Which expression is equal to (x+4)(−3x2−4x+2)? −3x3−4x2+2x+8 −3x2−4x+8 −3x3−16x2−14x+8 −3x2−3x+6

Answers

Answer 1

Answer:

Answer:

−3x3−16x2−14x+8

Step-by-step explanation:

first times the first x in parentheses by everything in the second

(x)(-3x^2) and (x)(-4x) and (x)(2)

-3x^3-4x^2+2x

Then times the 4 by the other variables in the parentheses

(4)(-3x^2) and (4)(-4x) and (4)(2)

-12x^2-16x+8

now the whole equation:

-3x^3-4x^2+2x -12x^2-16x+8

now you must simplify or add like terms

-3x^3-16x^2-14x+8 is your answer, which is the first one.

Answer 2

Answer:

Answer:

I believe this is what you're looking for

Step-by-step explanation:

Related Questions

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0 ≤ x ≤ 5
All real numbers
All positive numbers

Answers

Hello,

y=k*e^(-x) with k=1(1=k*e^(-0)) is defined for all reals.

Answer C

Answer:

the answer is all real numbers

Step-by-step explanation:

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Answers

Answer:

it is a 90*

Step-by-step explanation:

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Answers

Answer:

$(V)/(\pi r^(2) )$ = h

Step-by-step explanation:

Lets try and get everything we can away from h.

V = $\pi$ $r^(2) h$

Divide $\pi$ $r^(2)$ from both sides of the equation.

Now we end up with:

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A payphone service charges $5.00 for the first three minutes and $1.00 for every minute additional or fraction thereof. How much will a caller have to pay if his call lasts for 8 minutes?

Answers

The caller would have to pay $10

Ted needs an average of at least 70 on his three history test he has scored already 85 and 60 on two test what is the minimum grade ted need on his third test?

Answers

so average=(total of scores)/(number of tests)
needs at least average of 70
at least is represented as greater than or equal to or the sign (>)
70>(total)/(number oftests)

since we have 3 tests, we have to have 3 scores so
70>(x+y+z)/3
he scored 85 and 60
70>(x+85+60)/3 (doesn't matter which to subsitute)
70>(x+145)/3
multiply obht sides by 3
210>x+145
subtract 145 from both sides
65>x
he needs to get at leas 65 on his third test

If RB = 5, then AB = ?
a. 2.5
b. 5
c. 10

Answers

it is 10
:) :) :) :) :) :)

Answer:

Step-by-step explanation:

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