dede2234
dede2234
31-01-2017
Mathematics
contestada
What is the vertex of y=2x^2+12x+22
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apologiabiology
apologiabiology
31-01-2017
the x value of the vertex for
ax²+bx+c=y is -b/2a
so
y=2x²+12x+22
b=12
a=2
-b/2a=-12/(2*2)=-12/4=-3
that is x value
to find y value, sub the x value for x
-3 for x
y=2(-3)²+12(-3)+22
y=2(9)-36+22
y=18-14
4
(-3,4) is vertex
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