Question

Evaluate (0.4p -0.5q)² using suitable identity.

please write in neat and clear way.​

Answer 1

Answer:

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Answer 2

${(a + b)}^{2}$

${(0.4p)}^{2} + 2(0.4p)(0.5q) + {(0.5q)}^{2}$

${0.16p}^{2} + 0.40pq + {(0.25)}^{2}$