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2 years ago

Simplifythe expression to a polynomial in standard form. (4x-3)(-2x^2-7x-5)

Mathematics

2 answers:

Kisachek [45]2 years ago

7 0

Answer:

(4x -3)(-2x^2 -7x-5)

(-8x^3 -28x^2 -20x) +(6x^2 +21x +15)

-8x^2 -22x^2 +1x +15

MariettaO [177]2 years ago

4 0

Answer:

-4x^3-22x^2+x+15

Step-by-step explanation:

multiply each of the terms by the binomial

-4x^3+6x^2-28x^2+21x-20x+15

simplify

-4x^3-22x^2+x+15

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A ( -7, 4)<br>B ( -7, 1 ) <br>C (-2 ,1)<br>D ( -2,4)

Andre45 [30]

Answer:

After 90° rotation,

(x,y) ----> (y,-x)

A (-7, 4) ----> A' (4,7)

B (-7, 1 ) ----> B' (1,7)

C (-2 ,1) ----> C' (1,2)

D (-2,4) ----> D' (4,2)

4 0

3 years ago

Need help parabola and its vertex

AVprozaik [17]

$y + 13 = 2(x - 1)^2$

use the equation: $(y_{2} - y_{1}) = m({x_{2} - x_{1})^2$

$(-11 + 13) = m(0 - 1)^2$

$2 = m(1)^2$

$m = 2$

$y + 13 = 2(x - 1)^2$

substitute y for 0, since x-intercepts occur on the x-axis, or the line y = 0

$0 + 13 = 2(x - 1)^2$

$13 = 2(x - 1)^2$

$13 = 2(x^2 - 2x + 1)[tex]\\[tex]13 = 2x^2 - 4x + 2$

$2x^2 - 4x - 15$

use the quadratic equation (can't type it out on brainly, if you don't know, look it up)

$x = 1 - \sqrt{ \frac{13}{2} }, 1 + \sqrt{ \frac{13}{2} }$

The answer is: $(1 - \sqrt{ \frac{13}{2} },0)$ and $(1 + \sqrt{ \frac{13}{2} },0)$

8 0

3 years ago

PLEASEEEEE SOMEONE HELP ME ASAP

marishachu [46]

Answer:

*helps*

Step-by-step explanation:

need anymore help?

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3 years ago

How many of the following statements are true?

pychu [463]

Answer:

The second one, third one, and fourth one

Step-by-step explanation:

i cant really explain it but i know that those are the ones.

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3 years ago

-9x+2>18 AND 13x+15≤-4

meriva

Answer:

for -9x+2>18 its x<-16/9 and for 13x+15≤-4 its x<-19/13

Step-by-step explanation:

4 0

3 years ago