expand (0.9p-0.5q)^2
Answers
Answered by
2
Answer:
0.81p2−0.9pq+0.25q2
Step-by-step explanation:
=(0.9p+−0.5q)(0.9p+−0.5q)
=(0.9p)(0.9p)+(0.9p)(−0.5q)+(−0.5q)(0.9p)+(−0.5q)(−0.5q)
=0.81p2−0.45pq−0.45pq+0.25q2
=0.81p2−0.9pq+0.25q2
Answered by
0
Answer:
using identity (a-b)² = a²-2ab+b²
(0.9p)²-2×0.9p×0.5q+ (0.5q)²
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