Khadijahelahi3 Khadijahelahi3

20-05-2017
Mathematics

contestada

If x=3 is a solution of the equation x^2+kx+15=0, find the value of k. Hence find the other solution of the equation

Respuesta :

AnnabethChase139 AnnabethChase139

20-05-2017

x^2 + kx + 15 = 0
3^2 + 3k + 15 = 0
9 + 3k + 15 = 0
24 + 3k = 0
3k = -24
k = -24/ 3
k = -8

Answer Link

Otras preguntas

which measurement contains a number with 12 tens

The Internet may best be compared to a/an

why might you want to use the commutative property to change the order of the intergers in the following sum before adding?-80+(-173)+(-20)

Number C divided by 0.4 is 10. What is C?

That was an exciting show! What part of speech is this?

50% of the population in Alaska lives within a 50-mile radius of Anchorage. If the total area of Alaska is 586,412 square miles, about what percent of the total

What is the UN Security Council?

Who made up the elite group in Soviet society?

A computer printer can print 10 pages per minute. Write an expression for the number of pages in M minutes.

What property of a light bulb's filament causes it to glow? 1. high voltage 2. high resistance 3. low resistance 4. low voltage