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Rebecca L.
Student at Johns Hopkins University
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Spanish
TutorMe
Question:

Si necesitara un coche nuevo, su padre se lo [blank].

Rebecca L.
Answer:

Si necesitara un coche nuevo, su padre se lo compraría. The answer is "compraría" because this si clause uses the format of "'Si' + imperfect subjunctive tense, conditional tense."

Calculus
TutorMe
Question:

∫(x*e^x)dx

Rebecca L.
Answer:

u=x dv=e^xdx du=dx v=e^x ∫(x*e^x)dx=x*e^x−∫(e^x)dx ∫(x*e^x)dx=x*e^x−e^x+C

Algebra
TutorMe
Question:

Solve for x: x^3+x^2−16x=16

Rebecca L.
Answer:

x^3+x^2−16x=16 x^3+x^2−16x−16=0 Let a(x)= x^3+x^2−16x−16 a(-1)=(−1)^3+(−1)^2−16(−1)−16 a(-1)=−1+1+16−16 a(-1)=0 a(x)=(x+1)(x^2−16) a(x)=(x+1)(x+4)(x−4) 0=(x+1)(x+4)(x−4) x=-1 or x=-4 or x=4

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