radomes.openskiesproject.org
aaaboi223 aaaboi223
  • 10-02-2015
  • Mathematics
Answered

\(\sqrt{x+10}= x-2\)


Help? Has to be factored.

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 10-02-2015

square both sides
x+10=x^2-4x+4
subtract x from both sides
10=x^2-5x+4
subtract 10 from both sides
0=x^2-3x-6
factor
what 2 numbers multiply to get -6 and add to get -5
the numbers are -6 and 1
so
(x-6)(x+1)=0
if xy=0 then assume x and y=0
so
x-6=0
x=6
x+1=0
x=-1


x=6 and/or-1

Answer Link

Related Questions

Ethnic and economic groups supporting FDR
How can you help to prevent muscle mass loss as you age A Cut back on the amount of calories you eat during the day B Maintain a regular exercise program C You
Which of the following structures does a fern have but a flatworm and a human dont Points 1 mitochondria nucleus chloroplasts DNA
Which of the following activities belongs on the top of the physical activity pyramid A playing video games B calisthenics C sprinting D running
Which group founded Harvard College in 1636 A Puritans B Catholics C Anglicans D Quakers
what is the hcf of 36 and 42
What is a Brain stem
What is the measure of one interior angle in a regular hexagon A 135 B 120 C 360 D 720
y 13x 2 what is the slope
What were three things Japanese borrowed from Korea and China