Question

Hi please help with this
have a great day​

Answer 1

Can you explain what this is then I can help

Answer 2

• - 11

Explanation:

Given a = -2.9

Simplify the fraction:

• (a² + a - 12)/(9 - a²) =
• (a² + 4a - 3a - 12)/(3 - a)(3 + a) =
• (a - 3)(a + 4) / - (a - 3)(a + 3) =
• - (a + 4) / (a + 3)

Now substitute the value of a:

• - (- 2.9 + 4) / (-2.9 + 3) =
• - 1.1 / 0.1 =
• - 11