The factored form of the expression 
is 
The expression x^2 + 9 has no real roots hence cannot be factored
Quadratic equations are equations with a degree of 2.
Given the quadratic function 
For the function
Using the difference of two squares:
For the expression x^2 + 9
The expression x^2 + 9 has no real roots hence cannot be factored
Learn more on factorization here: brainly.com/question/20293447
<em>Question</em><em>:</em><em> </em><em>t</em><em>he product of two and a number, divided by five</em>
<em>Let</em><em> </em><em>the</em><em> </em><em>number</em><em> </em><em>be</em><em> </em><em>'a'</em><em>.</em>
<em>Answer</em><em>:</em><em> </em><em>2</em><em>a</em><em>/</em><em>5</em>
Answer:
300 g
Step-by-step explanation:
First divide the mass of those 12 marbles (60 g) by the number of marbles which have 60 g mass (12 marbles). You'll get the answer as 5 g , which means 5 g is the mass of 1 marble. Now multiply the answer by 60 (specification of marbles). You'll have the answer as 300 g.
i.e.
60 / 12 = 5
5 x 60 = 300
