Answer:

Answer:a²2-12a+4

Step-by-step explanation:

Sum of (a²2-7a+10) + (3a²2+4a-15)

= a²2-7a+10+3a²2-4a-15

= a²2+3a²2-7a-4a+10-15

= 3a²4-11a-5

Now,

Subtract (3a²4-11a-5) - (2a²2+a-9)

= 3a²4-11a-5-2a²2-a+9

= 3a²4 -2a²2-11a-a-5+9

= a²2-12a+4

Answer:

Hi,

Step-by-step explanation:

A concept map or conceptual diagram is a diagram that depicts suggested relationships between concepts. Concept maps may be used by instructional designers, engineers, technical writers, and others to organize and structure knowledge.