maura2mconroy0547 maura2mconroy0547

26-01-2017
Mathematics

contestada

solve the quadratic equation x^2-2x-8=0

I have tried many ways for this one but it ends up being a ridiculous answer.

Respuesta :

PsychrolutesMarcidus PsychrolutesMarcidus

26-01-2017

Using cross multiplication

[tex] x^{2} -2x-8 =0[/tex]
(x-4)(x+2)=0
x-4=0
x+2=0

Thus x=4,-2

Answer Link

Otras preguntas

In which ethical leadership principle does the leader place issues of fairness at the center of their decision making?

Chlorpromazine (Thorazine) may cause which of the following side effects? a. Respiratory depression b. Hemorrhage c. Tachycardia d. Gastric ulcers

Is 2 6/7+5 1/3 irrational or rational?

If a = 9 and b = 4, what is the value of 2a – b? A 10 B B 14 25 D 72

The area of a circular field is 154msqu. What is the perimeter of the field?(pi=22/7) 44 49 88 176

Simplify √-12-√6 2i √2i i √2

Making changes to works of art produced by previous generations was seen as deeply taboo in China, and perpetrators could be punished with large fines and even

What is the slope of y=−4? If the slope is undefined, enter ∅ as your answer.

Solve for the indicated variable in each math formula. 1.C=2(3.14)r for r 2.A=1/2bh for b 3.y=Mx+b for x 4.A=1/2(a+b)h for h 5.V(3.14)r(r)h for h

. Aristotle believed humans have a _______________ meaning humans have an innate desire to act, mimic, to pretend and that is how we learn. (Which essentially e