Question

Expand using suitable identities: (2a + ½)²​

Answer 1

Answer:

${(2a + \frac{1}{2} )}^{2} \\ = 4 {a}^{2} + 2 \times 2a \times \frac{1}{2} + { (\frac{1}{2} )}^{2} \\ = 4 {a}^{2} + 2a + \frac{1}{4}$

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Answer 2

Answer:

= 4a^2 + 1/4 + a

Step-by-step explanation:

(a+b)^2 = a^2 + b^2 + 2ab

= 4a^2 + 1/4 + a