Factor this polynomial expression. 3x2 + 30x+75 O A. 3(x - 5)(x+5) O B. (3x + 5)(x+ 15) O C. 3(x - 5)(x - 5) O D. 3(x + 5)(x+5)

Mathematics · Middle School · Wed Jan 13 2021

Answered on

We have,

3x² + 30x+75

Taking common,

3[x² + 10x + 25 ]

3[x² + 5x + 5x + 25]

3[x(x + 5) + 5(x + 5)]

3(x+5)(x+5)

 

Hence, option (D) is correct.