Question

Please help on this one question

Which of the following is equivalent to (2a + a)(3b + 1)?

Tip: Simplify the expression on the left first, and then use the distributive property.

Answer 1

9ab+3a

Explanation:

First Simplify:

(2a+a)*(3b+1)

• 2a*3b=6ab
• a*3b=3ab
• 1*2a=2a
• 1*a=a

Combine like terms:

6ab+3ab=9ab

2a+a=3a

Add it all up:

9ab+3a

Done!!!

Answer 2

9ab+3a

Explanation:

2a*3b=6ab

2a*1=2a

a*3b=3ab

a*1=a

adding everything together=6ab+2a+3ab+a=9ab+3a