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mistymjoy
06.07.2021 •
Mathematics
Given that y can be written in the form
, where a and b are constants, find the value of a and the value of b.
pls help i rly need this Pls pls pls pls
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Ответ:
a = -
, b = - ![\frac{25}{4}](/tpl/images/2419/1882/70ba6.png)
Step-by-step explanation:
To obtain the required form use the method of completing the square
add/ subtract ( half the coefficient of the x- term)² to x² - 9x
y = x² + 2(-
)x +
-
+ 14
= (x -
)² -
+ ![\frac{56}{4}](/tpl/images/2419/1882/d5d7a.png)
= (x -
)²-
← in the form (x + a)² + b
with a = -
and b = - ![\frac{25}{4}](/tpl/images/2419/1882/70ba6.png)
Ответ:
a = 4.5
b = -6.25
Step-by-step explanation:
The given equation to us is ,
And its given that it can we written in the form of ,
Where ,
a and b are constants .Therefore ,
Multiplying 9x by 2/2 ,we have ,
Adding and subtracting (9/2)² ,
Therefore , we can write it as ,
Hence the value of a is 9/2 and b is -6.25 .
Ответ:
6 1/2
Step-by-step explanation:
Use LCD and evaluate.
I hope this helped!!
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