Math  /  Algebra

QuestionExpand and simplify (x+3)(x5)(x+3)(x-5)

Studdy Solution

STEP 1

1. We are asked to expand and simplify the given expression.
2. The expression is a product of two binomials.

STEP 2

1. Apply the distributive property (also known as the FOIL method for binomials) to expand the expression.
2. Combine like terms to simplify the expression.

STEP 3

Apply the distributive property to expand the expression (x+3)(x5)(x+3)(x-5). Use the FOIL method, which stands for First, Outer, Inner, Last:
First: Multiply the first terms in each binomial: x×x=x2x \times x = x^2.
Outer: Multiply the outer terms in the binomials: x×(5)=5xx \times (-5) = -5x.
Inner: Multiply the inner terms in the binomials: 3×x=3x3 \times x = 3x.
Last: Multiply the last terms in each binomial: 3×(5)=153 \times (-5) = -15.

STEP 4

Combine all the terms obtained from the expansion:
x25x+3x15 x^2 - 5x + 3x - 15
Combine the like terms 5x-5x and 3x3x:
x22x15 x^2 - 2x - 15
This is the simplified form of the expression.

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