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2 years ago

Multiplying polynomials (x-4)^2

Mathematics

2 answers:

balandron [24]2 years ago

8 0

X2-8x+16
Use (x-4)(x-4) and use distributive property

Anettt [7]2 years ago

4 0

$\sf \dashrightarrow(x - 4) {}^{2}$

$\\ \\$

$\sf \dashrightarrow {x}^{2} + {4}^{2} + 2 \times 4 \times x$

$\\ \\$

$\sf \dashrightarrow {x}^{2} + 16 + 8x$

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(1 point) consider the function f(t)=⎧⎩⎨⎪⎪⎪⎪0,−5,−6,6,t<00≤t<11≤t<7t≥7;f(t)={0,t<0−5,0≤t<1−6,1≤t<76,t≥7; 1. wr

sergij07 [2.7K]

$f(t)=\begin{cases}0&\text{for }t$

Recall that

$u(t)=\begin{cases}0&\text{for }t$

Take it one piece at a time. For $t\ge0$ , we can scale $u(t)$ by -5:

$-5u(t)=\begin{cases}0&\text{for }t$

If we shift the argument by 1 and scale by -5, we have

$-5u(t-1)=\begin{cases}0&\text{for }t$

so if we subtract this from $-5u(t)$ , we'll end up with

$-5u(t)+5u(t-1)=\begin{cases}0&\text{for }t$

For the next piece, we can add another scaled and shifted step like

$-6u(t-1)+6u(t-7)=\begin{cases}0&\text{for }t$

so that

$-5u(t)+5u(t-1)-6u(t-1)+6u(t-7)=\begin{cases}0&\text{for }t$

For the last piece, we add one more term:

$6u(t-7)=\begin{cases}0&\text{for }t$

and so putting everything together, we get $f(t)$ :

$f(t)\equiv-5u(t)+5u(t-1)-6u(t-1)+6u(t-7)+6u(t-7)$
$f(t)\equiv-5u(t)-u(t-1)+12u(t-7)$

5 0

3 years ago

Which expression is equivalent to

irina [24]

Answer:

The answer is q12

3 0

3 years ago

Read 2 more answers

Describe how to find the least common multiple of three numbers

notka56 [123]

Find all the prime factors of the three numbers. pick up the common factors, ONCE, then pick up the non-common factors one by one, multiply the factors, the product is the least common factor.
example: the least common multiple of 6, 8, and 15
6=2*3
8=2*2*2
15=3*5
Note: do not write 8 into 4*2, because 4 is not a prime number. you have to break the number down to prime factors only.
Notice that 6 and 8 have a common factor 2, so pick up the 2;
6 and 15 have a common factor of 3, so pick up the 3.
those are the only two shared factors, so 2×3
now pick up whatever is not shared:
the two 2s for 8 and the 5 for 15 is not shared, add 2, 2, and 5 to the multiplication: 2×3×2×2×5=120
120 is the least common multiples of 6,8, and 15

this is basically how it is done. I believe you can explain better in your own words.

3 0

3 years ago

Given h(x) = -2- 4, find h(-6)

likoan [24]

Answer:

h(-6) = 2

Step-by-step explanation:

-x - 4 =

-(-6) - 4 = 2

6-4=2

5 0

3 years ago

Please show your work! :)))

Naddika [18.5K]

Answer:

-8 3/4

Step-by-step explanation:

1. Simplify it.

15 - 24 + 1 divided by 4

2. Divide.

15 - 24 + 1/4

3. Add and subtract.

-9 + 1/4

-8 3/4

3 0

3 years ago