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hany90
05.10.2019 •
Mathematics
The function g(x) is defined as g(x) = 6x2 + 23x – 4. when does g(x) = 0?
a.) x = –6 or x = 1/4
b.) x = –4 or x = 1/6
c.) x = -1/4 or x = 6
d.) x = -1/6 or x = 4
*the answer is b, but if there's anyone looking to earn brainliest, answer with a full explanation.*
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Ответ:
B.) x = –4 or x = 1/6 .
Step-by-step explanation:
Given : g(x) = 6x² + 23x – 4.
To find : Solve.
Solution : We have given that
g(x) = 6x² + 23x – 4.
If g(x) = 0
6x² + 23x – 4 = 0 .
On factoring
6x² + 24x - 1x – 4 = 0
Taking common 6x from first two terms and -1 from last two terms.
6x ( x + 4 ) -1 (x + 4) = 0.
On grouping
(6x -1) ( x +4) = 0
For 6x -1 = 0
6x = 1
on dividing by 6
x = 1/6.
For x +4 = 0
On subtracting 4 from both sides
x = -4.
Therefore, B.) x = –4 or x = 1/6 .
Ответ: