24.1k views
9 votes
(c) Expand and simplify
(x-6)(x+9)

User Joe Bobby
by
7.3k points

1 Answer

14 votes

Answer:

x^2 +3x -54

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 answer:

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

(x^2 + 3x -54)

User Jayesh Dankhara
by
7.1k points
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