Respuesta :

Intriguing456

Answer:

7a²

Step-by-step explanation:

We can combine like terms in the expression:

  • -2a² + 9a²

by reversing the distributive property.

The distributive property states that:

  • A(B + C) = AB + AC

We can see that the given expression is in the form:

  • AB + AC

where:

  • A = a²
  • B = -2
  • C = 9

Undistributing the A, we get:

  • a²(-2 + 9)

Finally, we can simplify it to:

  • 7a²