alfarojosiah50 alfarojosiah50

13-06-2022
Mathematics

contestada

Question 9 of 10
Solve (x-3)² = 5.
O A. x=3± √5
OB. x=5+√3
OC. x=8 and x = -2
OD. x = -3± √5

Respuesta :

Scabbers Scabbers

13-06-2022

(x-3)²=5

x²-6x+9= 5

x²-6x+9-5=0

x²-6x+4=0

D=b²-4ac

= (-6)²-4×1×4

=36-16

= 20

x1=(-b-VD)/2a

= (6-V20)/2

=( 6- V4 × V5)/2

= (6-2V5)/2

= 3-V5

x2= (-b+VD)/2a

= (6+2V5)/2

= 3+V5

-> answer A

Answer Link

Otras preguntas

What is codominance? Give an example.

what multiplies to -32 and adds up to -14

plz help me i need help! im not sure what this worksheets asking for but it says Habia o era? com_____tu primo de pequeno? de que color______tu carrito favorito

Which is NOT a problem Nigeria has faced post-independence? Corrupt government officials Increased disputes between the Muslims in the North and the Christians

The number one defense you have against contaminated food, soil, or water is (1 point) food safety. wash your hands.**** cook everything. only eat fruit and veg

the European union is an economic alliance that was formed to a) prevent the spread of Russian factories to other parts of Europe b) eliminate trade barriers

what does 15=-3y+21x in slope intercept form

Approximately how many people died during the Rwandan genocide? A. 8,000 B. 80,000 C. 800,000 D. 8,000,000

Relate the term homozygous to heterozygous by using an example from Mendel’s experiments.

plz help me i need help! im not sure what this worksheets asking for but it says Habia o era? com_____tu primo de pequeno? de que color______tu carrito favorito