Which of the equations has 2 as the root
a) 2 −4+5=0 b)2 +3−12=0 c)22 −7+6=0 d)32 −6−2=
Answers
Answer:
The ORP is directly dependent on the temperature of the sensing system according to Nernst equation above. The actual temperature effect depends on the ratio of activities of each redox couple present in solution. In most cases, electroactive species in solution are unknown and for this reason, temperature is not compensated in ORP sensors. Proper use of ORP sensors require that their calibration is done at the same temperature at which the measurement will be carried out. For this reason, some vendors provide
Answer:
Substituting x=2 in given equations
A:
x
2
+4x−5⇒(2
2
)+4×2−5⇒4+8−5=7
B:
x
2
+3x+12⇒(2
2
)+3×2+12⇒4+6+12=22
C:
2x
2
−7x+6⇒2(2
2
)−7×2+6⇒8−14+6=0
D:
3x
2
−6x+2⇒3(2
2
)−6×2+2⇒12−12+2=2
Then (C) equation has 2 as a root.
Step-by-step explanation:
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