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Answered

given P(x)=2x^3+3x^2-5x-10,what is th value of P(3)

how many positive real roots does x^3+x^2-4x-4=0 have?

which of the following is the factored form of x^3+x^2-4x-4?

how should the polynomial function f(x)=3x+2x^3+4x^5+4 be written in standard form

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NEIL082182IN

Answer:

A) P(x)= 2x³+3x²-5x-10

P(3) = 2(3)³+3(3)²-5(3)-10

= 2(27)+3(9)-15-10

= 54 + 27 -15 -10

= 56 ans..

B) x³+x²-4x -4

= (x+1)(x-2)(x+2)

x+1=0

x= -1

x-2=0

x=2

x+2=0

x=-2

the real roots : -1 , 2 and -2

therefore: only one positive real root (x=2) ans..

C) x³+x²-4x-4

(x+1)(x-2)(x+2) ans. factored form

D) f(x)=3x+2x³+4x⁵+4

f(x)= 4x⁵+2x³+3x+4 ans.. standard form

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