∆ ABC is an acute-angled triangle. Points D and E are the midpoints of BC and DC. B-D-E, O AD-E-C. Prove that AB² + 2AC² =3AE² + 6EC². A.M
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Answer:
from this definition
\huge\mathtt{F=MA}F=MA
\mathtt{F = 14 \times 30}F=14×30
\mathtt{F = 420N}F=420N
Note:
F=force
M=mass
A=acceleration
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