Answer: x = ± i , x = ±√2i are solution .
Step-by-step explanation:
Given : , use u substitution to solve.
To find : what are the solutions of the equation .
Solution : We have given that .
Let consider = u .
Substitute u = in given equation .
.
On factoring
.
Taking common
u( u+2) +1 (u+2) = 0.
On grouping
(u+1) (u+2) =0
Now, u+1 = 0 ⇒ u = -1.
u+2 = 0 ⇒ u = -2.
In term of x, plugging = u.
= -1 ; = -2.
taking square root both side
x = ± i
x = ±√2i.
Therefore, x = ± i , x = ±√2i are solution .
Answer:
*see the image I attached to see how it should look on the graph*
Explanation:
If the graph I provided is not clear enough, just connect the following points.
(-6, 0), (-4, 1), (-2, 2), (0, 3), & (2, 4)
That should be how the line should look.
Answer:
OLUTION
GIVEN
Alex and Chris share sweets in the ratio Alex : Chris = 7 : 3.
Alex receives 20 more sweets than Chris.
TO DETERMINE
The number of sweets Chris receives.
EVALUATION
Here it is given that Alex and Chris share sweets in the ratio Alex : Chris = 7 : 3
Let Alex receives 7x sweets and Chris receives 3x sweets
Now it is given that Alex receives 20 more sweets than Chris.
So by the given condition
Hence the required number of sweets Chris receives
= 3 × 5
= 15
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Learn more from Brainly :-
1. The diagonals of two squares are in the ratio 3 : 2. Find the ratio of their areas.
brainly.in/question/33402612
2. Given that a : b:c = 75: 120 : 132
(i) simplify a : b:c,
ii) find b:a,
iii) find b:c.
brainly.in/question/19489133
creds to
pulakmath007
Answer:
Yes, if x < -1
Step-by-step explanation:
Is x + 5 less than 4?
x + 5 < 4
x < 4 - 5
x < -1
Yes, if x < -1