Answered

At Westonci.ca, we provide reliable answers to your questions from a community of experts. Start exploring today! Get detailed and accurate answers to your questions from a community of experts on our comprehensive Q&A platform. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.

Use the quadratic formula to solve xsquared + 3x-4 = 0, and then verify your answer by graphing.
a.x= -41 b.4.1
C. X = -4,- 1
d. x= -4,2

I need help please ​

Sagot :

groenewaldrayhana04

Answer:

at answer C, that's supposed to be x= -4 , 1 and that's the answer.

gufeliz1965

x^2 + 3x - 4 = 0

Quadratic formula:  

x = -b +- sqrt{b^2 - 4ac}/(2a)

Let a = 1

Let b = 3

Let c = -4

Just plug into the quadratic formula and do the math.

We are looking for x.

x = -3 +- sqrt{3^2 - 4(1)(-4)}/2(1)

x = -3 +- sqrt{9 + 16}/2

x = -3 +- sqrt{25}/2

x = (-3 +- 5)/2

Separate x into two parts.

Part 1

x = (-3 -5)/2

x = (-8)/2

x = -4

Part 2

x = (-3 + 5)/2

x = 2/2

x = 1

Answer: x = -4,  x = 1

Thank you for choosing our service. We're dedicated to providing the best answers for all your questions. Visit us again. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. We're dedicated to helping you find the answers you need at Westonci.ca. Don't hesitate to return for more.