Please helpppp the image is attached!!
1 answer:
Answer:
D
Step-by-step explanation:
1. x^2+12x+20=0
2. x^2+10x+2x+20=0
3. x(x+10)+2(x+10)=0
4. (x+10)x(x+2)=0
5. x+10=0
x+2=0
x=-10,-2
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Step-by-step explanation:
U(t) = 5.1t^2 − 1.7t
U'(t)=2*5.1t-1.7
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