Answer:
[tex]3x(4x+5)[/tex]
Step-by-step explanation:
You have to multiply and divide the whole expression by [tex]3x[/tex]:
[tex]12x^2+15x = 3x\left(\dfrac{12x^2+15x}{3x}\right)= 3x\left(\dfrac{12x^2}{3x}+\dfrac{15x}{3x}\right)[/tex]
Performing the operation inside the brackets leads to
[tex]3x(4x+5)[/tex]
Answer:
3x(4x+5)
Step-by-step explanation:
12x²+15x=4x×3x+5×3x=3x(4x+5)
