Answer:
(a^2-36)
Step-by-step explanation:
This is a difference of squares, so the cross terms will cancel.
Step 1: a times a = a^2
Step 2: we don't multiply (a)(6) and (-6)(a) because they will only cancel.
Step 3: (-6) times 6 = -36
[tex] {a}^{2} - 36 [/tex]
STEP 1: use (a - b)(a + b)= a^2 - b^2 to simplify the product
a^2 - 6^2
STEP 2: evaluate the power
a^2 - 36
