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1) 15x^3 + 19x^2 + 6x

A) (3x^2 +2)(5x+3)
B) x(3x+2)(5x+3)
C) x^2(3x+2)(5x+3)
D) x(5x+2)(3x+3)
E) Prime

I chose E) Prime.

2) 2x^2 - 14x - 6x + 42

A) 2(x+7)(x+3)
B) (x+7)(2x-6)
C) 2(x-7)(x-3)
D) (x-7)(x-3)
E) Prime
I know that this is 2x^2 - 20 + 42 when you combine the 14x and 6x so I chose answer E) Prime but I am not sure for this one.

Sagot :

Panoyinidn
1.[tex]15x^{3} + 19x^{2} + 6x[/tex]
   [tex]x(15x^{2}) + x(19x) + x(6)[/tex]
   [tex]x(15x^{2} + 19x + 6})[/tex]
   [tex]x(15x^{2} + 9x + 10x + 6)[/tex]
   [tex]x(3x(5x) + 3x(3) + 2(5x) + 2(3))[/tex]
   [tex]x(3x(5x + 3) + 2(5x + 3))[/tex]
   [tex]x(3x + 2)(5x + 3)[/tex]
   [tex]The\ answer\ is\ B.[/tex]

2.[tex]2x^{2} - 20x + 42[/tex]
   [tex]2(x^{2}) - 2(10x) + 2(21)[/tex]
   [tex]2(x^{2} - 10x + 21)[/tex]
   [tex]2(x^{2} - 7x - 3x + 21)[/tex]
   [tex]2(x(x) - x(7) - 3(x) + 3(7))[/tex]
   [tex]2(x(x - 7) - 3(x - 7))[/tex]
   [tex]2(x - 3)(x - 7)[/tex]
   [tex]The\ answer\ is\ C.[/tex]
Jmevans25idn

Answer:

E Prime

Step-by-step explanation:

A) (3x^2 +2)(5x+3)

B) x(3x+2)(5x+3)

C) x^2(3x+2)(5x+3)

D) x(5x+2)(3x+3)

E) Prime

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