3 years ago

Solve the quadratic by taking the square root

Mathematics

1 answer:

Veronika [31]3 years ago

4 0

Answer:

Step-by-step explanation:

-7x²=-448

x²=64

x=±8

You might be interested in

8x2 − 5 + 7x4 − 9x − x5

Veseljchak [2.6K]

Answer:

$=-\left(x-1\right)\left(x^4-6x^3-6x^2-14x-5\right)$

Step-by-step explanation:

Factor out comon Term -1

$=-\left(x^5-7x^4-8x^2+9x+5\right)$

Factor $x^5-7x^4-8x^2+9x+5:\quad \left(x-1\right)\left(x^4-6x^3-6x^2-14x-5\right)$

$x^5-7x^4-8x^2+9x+5$

Use the rational root theorem

$a_0=5,\:\quad a_n=1$

The dividers of $a_{0}$ : 1, 5, The dividers of $a_n$ : 1

Therefore, check the following rational numbers: ± $\frac{1,\:5}{1}$

$\frac{1}{1}$ is a root of the expression, so factor out $x-1$

$=\left(x-1\right)\frac{x^5-7x^4-8x^2+9x+5}{x-1}$

$\frac{x^5-7x^4-8x^2+9x+5}{x-1}=x^4-6x^3-6x^2-14x-5$

$=x^4-6x^3-6x^2-14x-5$

$=-\left(x-1\right)\left(x^4-6x^3-6x^2-14x-5\right)$

8 0

3 years ago

1/3x+y=4 help please?

professor190 [17]

$\frac{1}{3}x+y=4\ \ \ \ \ |subtract\ \frac{1}{3}x\ from\ both\ sides\\\\y=4-\frac{1}{3}x$

8 0

2 years ago

Read 2 more answers

A total of 110 gallons of water can flow through hose b in 10 my

loris [4]

Answer: Hose b has a faster hose rate
please thank this answer!:)

3 0

3 years ago

How many solutions does the following equation have?<br> -17(y-2)=-17y+64−17(y−2)=−17y+64

blondinia [14]

Answer:

It has 2 solutions

Step-by-step explanation:

Solution 1

-17(y - 2) = -17y + 64 - 17(y - 2)

Solution 2

-17y + 64 - 17(y - 2) = -17y + 64

5 0

3 years ago

The radius of a basketball hoop is 9 inches. What expression can be used to find the hoop's circumference in inches?

oksano4ka [1.4K]

C=2pir
r=9
c=2pi9
c=18pi
if we aprox pi=3.141592
c=56.54865 inches

4 0

3 years ago