Expanding the Expression: (5p - 3q)(p + 7q)
This article will guide you through expanding the expression (5p - 3q)(p + 7q) using the distributive property or FOIL method.
Understanding the Distributive Property
The distributive property states that multiplying a sum by a number is the same as multiplying each addend in the sum by the number and then adding the results.
In simpler terms, a(b + c) = ab + ac.
Expanding the Expression
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Apply the distributive property:
- Multiply the first term of the first binomial, 5p, by each term in the second binomial:
- 5p * p = 5p²
- 5p * 7q = 35pq
- Multiply the second term of the first binomial, -3q, by each term in the second binomial:
- -3q * p = -3pq
- -3q * 7q = -21q²
- Multiply the first term of the first binomial, 5p, by each term in the second binomial:
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Combine the terms:
- 5p² + 35pq - 3pq - 21q²
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Simplify by combining like terms:
- 5p² + 32pq - 21q²
Final Answer
Therefore, the expanded form of (5p - 3q)(p + 7q) is 5p² + 32pq - 21q².