Question

(b) 3a? - 5a (a - 7) + a (6 + 7a)​

Answer 1

Answer:

2a(a+22)

Step-by-step explanation:

3a?−5a(a−7)+a(6+7a)

Use the distributive property to multiply a by 6+7a.

3a−5a(a−7)+6a+7a  

2

 

Use the distributive property to multiply −5a by a−7.

3a−5a  

2

+35a+6a+7a  

2

 

Combine 3a and 35a to get 38a.

38a−5a  

2

+6a+7a  

2

 

Combine 38a and 6a to get 44a.

44a−5a  

2

+7a  

2

 

Combine −5a  

2

 and 7a  

2

 to get 2a  

2

.

44a+2a  

2