dani04903 dani04903

04-04-2020
Mathematics

contestada

Solve 2x^2 + 6x = 36 by graphing the related function.

Respuesta :

austyngranberry austyngranberry

04-04-2020

Sorry I can’t help but yea

Answer Link

Officialalehpeter Officialalehpeter

04-04-2020

Answer: 3 or -6

Step-by-step explanation:

2x2+6x=36

Collect like terms

2x2+6x-36=0

Divide all by 2

X2+3x-18=0

Factorise

Factors of -18 that will give +3 is +6&-3

X2+6x-3x-18=0

X(x+6)-3(x+6)=0

(X-3)(x+6)=0

X-3=0

X=3

X+6=0

X= -6

X= 3 or -6

Answer Link

Otras preguntas

The areas of two circles are 36(pi) and 64(pi). What is hte ratio of the diameters? of the circumferences?

Which of the following writers did not come from Ireland? a) W. B. Yeats b) James Joyce c) Seamus Heaney d) Oscar Wilde e) none of the above; all came from

Okay so I have three tests tomorrow. Haven't even started studying for two of them (Literature and History) but I already know science. How do you all learn 40

What is a sound wave?

Rewrite the following linear equation in slope-intercept form. Write your answer with no spaces. y+2=4(x-3)

How does Macbeth persuade the murderers to help him? He tells the murderers that it was really Banquo who did some things they thought Macbeth had done to harm

On average Exante Express trains are 50km/hr faster than Paral passenger trains. A Paral passenger train requires 60% more time then Exante train to travel 1800

Why can't plants and animals use the nitrogen directly from the atmosphere? Answer A.There is not enough of it in the air. B.Nitrogen gas contains the element i

If 6x −3 = −5x +7, then x =? Can someone explain this one?

For f(x)=3x+4, find f(2) and find x such that f(x)=17