tbogard0001 tbogard0001

03-07-2020
Mathematics

contestada

Which of the following are solutions to the quadratic equation below?
Check all that apply.
X^2+ 8x=9
A. -3
B. 1
C. -9
D. -1
E. 3

Respuesta :

Alfpfeu Alfpfeu

03-07-2020

Answer:

1 and -9

Step-by-step explanation:

[tex]x^2+8x-9=0\\<=> x^2-x+9x-9=0\\<=> x(x-1)+9(x-1)=0\\<=> (x+9)(x-1)=0\\<=> x = -9 \ \ or \ \ x =1\\[/tex]

hope this helps

Answer Link

Otras preguntas

Eye protection is particularly important for children who spend all day on the water or at the beach. Since the glare is intense. What is the BEST way to combin

Even though the Punnett square calculates that a couple has a 50/50 chance of producing a male or female, there are slightly more females born in the human popu

why were abolitionist opposed to how cotton was produced in the south

what is a sentence with the words evaluate and criteria

why does photosynthesis only occur in plants

The stipulation requiring that accused persons be told they have "the right to remain silent" stems from A. the Monroe Doctrine. B. Marbury v. Arizona. C. the P

Jenny spent 35 minutes doing research on the Internet. She finished at 7:10p.m. At which time did Jenny start her research?

__________ is economic rivalry among businesses selling similar products.

Which became a popular new form of entertainment in America during the 1920s? A. quilting bees B. dance halls C. radio D. television

A cake is 25cm in diameter. how many caketins can they fit on the oven tray at one time? a tray is 600mm and 500mm