treyceratops1082
26.08.2019 •
Mathematics
Write y=-3x^2-18x-31 in vertex form.
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Ответ:
the answer > vy=−3x2−18x−31
step-by-step explanation:
vy+3x2+18x=−31
3(x+3)2−27
vy+vy+3(x+3)2−27=−31
vy+vy+3(x+3)2=−31+27
add −31 and 27
.
vy+vy+3(x+3)2=−4
Ответ:
and
X= 6/16 or 2.667