Answer:
He failed to check for extraneous solutions
Step-by-step explanation:
sqrt(x+6) -4 =x
Add 4 to each side
sqrt(x+6) -4+4 =x+4
sqrt(x+6) =x+4
Sqaure each side
(sqrt(x+6))^2 =(x+4)^2
x+6 = x^2 +8x+16
Subtract 6 from each side
x = x^2 +8x +10
Subtract x from each side
0 = x^2 +7x +10
Factor
0 = (x+5) (x+2)
Using the zero product property
x=-5 x=-2
Check the solutions
sqrt(-5+6) -4 =-5
sqrt(1) -4 = -5
1-4 =-5
-3 does not equal -5 not a solution
sqrt(-2+6) -4 =-2
sqrt(4) -4 = -2
2-4 =-2 is a solution
Answer:
$270 for 1,370 ounces of cheese-its,
Step-by-step explanation:
one ounce is approx. 0.20 cents
Answer:
y = (x -2)^2 +4
Step-by-step explanation:
Translation (right, up) by (h, k) gives you the function ...
g(x) = f(x -h) +k
You want f(x) = x^2 to be translated right 2 and up 4, so it becomes ...
y = (x -2)^2 +4
Answer:
10/28
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
The meaning of n factorial → n !
n ! = n(n - 1)(n - 2)........ × 3 × 2 × 1
For example
7 !
= 7 × 6 × 5 × 4 × 3 × 2 × 1