alleryAfter taking out 2, the expression 25p2 + 30pq + 9q2 is the square of:
A(5p - 3q)
B(3p + 5q)
C(5p + 9q)
D(5p + 3q)
Answer & Solution
Correct answer: D. (5p + 3q)
1. The first term is the square of 5p and the last of 3q.
2. The middle term is twice 5p times 3q, which is 30pq.
3. So the expression is (5p + 3q)2.
4. The answer is (5p + 3q).
_Source: syllabus Mathematics, Ch 4 'Exploring Algebraic Identities'_
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