Question

(a−2.87)2. The 2 goes on top of the a so it's -2, and the 7 goes on top of the 8.

Answer 1

To simplify the expression (a-2.87)^2, you can use the FOIL method to expand the binomial and then simplify the resulting expression.

Step-by-step explanation:

Based on the question, you are asked to evaluate the expression (a-2.87)^2. To simplify this expression, you need to square the binomial (a-2.87).

In order to do this, you can use the FOIL method, which stands for First, Outer, Inner, Last. First, multiply the first terms, which gives you (a*a=a^2). Outer, multiply the outer terms, which gives you (a*-2.87=-2.87a).

Inner, multiply the inner terms, which gives you (-2.87*a=-2.87a).

Last, multiply the last terms, which gives you (-2.87*-2.87=8.2369).

Now, combine the results: a^2-2.87a-2.87a+8.2369.

Finally, simplify the expression: a^2-5.74a+8.2369.