Question

Multiply and simplify: (2x + 3)(2x - 3)

Answer 1

There is an identity stating that!
a2 - b2 = (a+b)(a-b)
Use the identity as such in the equation
HINT: [DO THE REVERSE!] :)

Answer 2

4x2 - 6x - 9 ???

Answer 3

\[4\chi ^{2}-9\] is the answer. Try using this to help you
FOIL (first so 2x times 2x) (Outer 2x times -3) (Inner 3 times 2x) (last +3 times -3)

Answer 4

Do you understand now?