3 years ago

Will the sum of 2x3+x2–4 and – 5x3–6x2 be a polynomial?

Mathematics

1 answer:

Lyrx [107]3 years ago

5 0

Yes, it will be polynomial.

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What’s the question tho lol

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At the time the cannonball reaches the ground, the vertical height of the cannonball from the ground is 0, i.e. h = 0.

Thus, the time it will take the cannonball to reach the ground is given by

$-16t^2+128t=0 \\ \\ \Rightarrow t(-16t+128)=0 \\ \\ \Rightarrow t=0\ or\ -16t+128=0 \\ \\ \Rightarrow16t=128 \\ \\ \Rightarrow t= \frac{128}{16} =8$

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