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Binomial Expression

Find the squa...

Question

Find the square of the following binomials by using the identity
$(x + 3)$

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Solution

$(x + 3)^{2} = C_{0} x^{2} 3^{0} + C_{1} x^{1} 3^{1} + C_{2} x^{0} 3^{2} = 1 \times x^{2} + 6 x + 1 \times 9 = x^{2} + 6 x + 9$

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