Dayo A.

Bioengineering Student at the University of Pennysylvania

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Pre-Calculus

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Question:

Find the roots of the following polynomial f(x)= x^3-9x.

Dayo A.

Answer:

f(x)= x^3-9x f(x)= x[(x^2)-9] f(x)=x(x-3)(x+3) roots: -3, 0, 3

Calculus

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Question:

Find the instantaneous velocity of particle at t=2 where its motion is defined as x(t)= 3(t^2)+2.

Dayo A.

Answer:

x(t)= 3(t^2)+2 v(t)= 6t v(2)=12. 12 m/s

Algebra

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Question:

5(-3x - 2) - (x - 3) = -4(4x + 5) + 13

Dayo A.

Answer:

true for all values of x and therefore all real numbers

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