tianar63927 tianar63927

10-03-2020
Mathematics

contestada

Solve the equation. x2 + 8x − 9 = 0 A) x = 1 B) x = 9 C) x = 9 or x = −1 D) x = −9 or x = 1

Respuesta :

shelbyrayann2 shelbyrayann2

10-03-2020

Answer:D. X= -9 or x= 1

X2 + 8x - 9 = 0

Answer Link

miljanamilovanovic12 miljanamilovanovic12

18-03-2020

Answer:

x=1 or x=-9

Step-by-step explanation:

x^2 + 8x − 9 = 0 (8x=9x-x)

x^2 - x+9x-9=0

x(x-1)+9(x-1)=0

(x-1)(x+9)=0

x-1=0 or x+9=0,then

x=1 or x=-9

Answer Link

Otras preguntas

help please? what minerals or ores is associated with potassium and explain the method by which the element is removed from the host ore or mineral.

Even though it did not appear a WMD program might be in place, what did Hussein do that increased the fears of weapons inspectors?

What is nationalism? a. a movement that depicted human beings as mainly shaped by the environments in which they lived b. a strong sense of attachment or belong

Alex spent 25% of his money on a sports drink. then he spent 25% of the remaining money on trail mix. He had $9 left. how much did Alex have to begin with

Will humans and animals be harmed by frequencies outside their hearing range?

Which one of the following individuals would be most likely to vote? a. A 30-year-old college graduate who has just moved to a new state b. A 19-year-old high

What is1 /5 divided by 4

solve the expression -2.2 x (-2) / (-1/4) x 5

how do i solve 7-4x=21-1x

Is the sentence compound, or is it simple with a compound verb? That's a cute jacket, but it won't provide enough warmth in the winter. a. simple sentence with