(c) Expand and simplify
(x-6)(x+9)

x^2 +3x -54

Step-by-step explanation:

Use the method FOIL

(First, Outer, Inner, Last)

1. Multiply the 1st terms in bracket 1 and the 1st term in bracket 2:

(x × x)

2. Multiply the 1st term in bracket 1 and the 2nd term in bracket 2:

(x × 9)

3. Multiply the 2nd term in bracket 1 and the 1st term in bracket 2:

(-6 × x)

4. Multiply the 2nd term in bracket 1 and the 2nd term in bracket 2:

(-6 × 9)

5. You'll get the

(x^2 + 9x - 6x - 54)

(x^2 + 3x -54)

Step-by-step explanation: