expand using suitable identities: (x+4/3) (x+4/3)

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Solution

$(x + \frac{4}{3}) (x + \frac{4}{3}) = {(x + \frac{4}{3})}^{2} = x^{2} + {(\frac{4}{3})}^{2} + 2 \times x \times \frac{4}{3} {Using {(a + b)}^{2} = a^{2} + b^{2} + 2 a b} = x^{2} + \frac{16}{9} + \frac{8 x}{3}$

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