Plz help

The volume of the rectangular prism is 60x3 + 145x2 + 70x. Factor to find the possible expressions for length, width and height of the prism.



4x(5x + 7)(3x + 2)



x(2x + 7)(10x + 1)



5x(4x + 7)(3x + 2)



5x(7x + 4)(3x + 2)

Respuesta :

Option C: [tex]5 x(4 x+7)(3 x+2)[/tex] is the possible expressions for length, width and height of the prism.

Explanation:

The volume of the rectangular prism is [tex]60 x^{3}+145 x^{2}+70 x[/tex]

To determine the length, width and height of the rectangular prism, let us factor the expression.

Thus, factoring 5x from the expression, we have,

[tex]5 x\left(12 x^{2}+29 x+14\right)[/tex]

Let us break the expression [tex]12 x^{2}+29 x+14[/tex] into two groups, we get,

[tex]5x[\left(12 x^{2}+8 x\right)+(21 x+14)][/tex]

Factoring 4x from the term [tex]12 x^{2}+8 x[/tex] , we get,

[tex]5x[4 x(3 x+2)+(21x+14)][/tex]

Similarly, factoring 7x from the term [tex]21 x+14[/tex] , we get,

[tex]5x[4 x(3 x+2)+7(3x+2)][/tex]

Now, let us factor out [tex]3x+2[/tex], we get,

[tex]5 x(4 x+7)(3 x+2)[/tex]

Hence, the possible expressions for length, width and height of the prism is [tex]5 x(4 x+7)(3 x+2)[/tex]

Therefore, Option C is the correct answer.