Mathematics
8 Online
OpenStudy (doodleduck8):
Let g(x) = x^2 + 2x - 6. Find the value of 2[g(2)].
12
4
18
6
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jhonyy9 (jhonyy9):
do you can calcule g(2) = ?
jhonyy9 (jhonyy9):
just substitute the 2 in place of x inside this quadratic
OpenStudy (jdoe0001):
\(\bf g(x) = x^2 + 2x - 6
\\ \quad \\
g({\color{brown}{ 2}})=({\color{brown}{ 2}})^2
+2({\color{brown}{ 2}})-6\implies \square ?
\\ \quad \\
2[g(2)]\implies 2\cdot \square ?\)
OpenStudy (doodleduck8):
I still don't know what the answer is
jhonyy9 (jhonyy9):
exactly how @jdoe0001 ve wrote it above
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OpenStudy (doodleduck8):
is it 12 or 4
jhonyy9 (jhonyy9):
first calcule the g(2) = ?
OpenStudy (doodleduck8):
I am not sure how
jhonyy9 (jhonyy9):
substitute in place of x the 2 and make the calculi
OpenStudy (doodleduck8):
so is it 4
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jhonyy9 (jhonyy9):
please show your work
OpenStudy (doodleduck8):
g(2), insert 2 for x
g(2) = 2^2 + 2(2) + 6 = 4 + 4 + 6 = 4 @jhonyy9
jhonyy9 (jhonyy9):
not is plus 6 is there -6
jhonyy9 (jhonyy9):
4+4-6=8-6=2
OpenStudy (doodleduck8):
so it is 6
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jhonyy9 (jhonyy9):
why 6 ?
jhonyy9 (jhonyy9):
g(2)=8-6=2
jhonyy9 (jhonyy9):
so and 2*g(2) = 2*2 = ?
OpenStudy (doodleduck8):
18 is the answer
jhonyy9 (jhonyy9):
why 18 ? 2*2 = ?
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jhonyy9 (jhonyy9):
2*2 = not 18
OpenStudy (doodleduck8):
4 is the answer, this is what I said first
jhonyy9 (jhonyy9):
yes but i wan checking your work - ok. ? how you get this 4
jhonyy9 (jhonyy9):
yes 4 is the right answer sure bc. 2*g(2) = 2*2 =4
jhonyy9 (jhonyy9):
hope helped
good luck
bye bye
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OpenStudy (doodleduck8):
Ok, thanks bye