mysonisaplant mysonisaplant

13-06-2020
Mathematics

contestada

Astudent says that if 5x^2=20 then x must be equal to 2. Do you agree or disagree with the student? Justify your answer

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

13-06-2020

Answer:

disagree, x= 2 or -2

Step-by-step explanation:

5x^2 = 20

Divide each side by 5

5x^2/5 = 20/5

x^2 = 4

Take the square root of each side

sqrt(x^2) = ±sqrt(4)

x = ±2

X could be either 2 or -2

Answer Link

Otras preguntas

draw a simple diagram of a carbohydrate molcule and describe its structure

Edit the following sentences to eliminate problems with subject-verb agreement and write the edited sentence. If a sentence is correct, write "correct."Jack's f

Why did the Europeans start leaving Europe for exploration?

Could anyone please help me with Q2

PLEASE!!!!!! HELP ME!!!!!!!!!!!!!!

Which defines the relationship between the number -9 and its additive inverse? A. -9x1= -9 B-9 +0= -9 C. (-9) X0 = 0 D. (-9) +9 = 0

Generally, those who are less active hese no opportunities to exercise. True or False?

claimed money how to market full of groceries buy

Can you help me do this?

how did the battle of kettle creek help raise the morale of georgia patriots toward the end of the revolutionary war?