Question

(x+3)^2 -3=
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Answer 1

${(x + 3)}^{2} - 3 \\ = {x}^{2} + 2 \times x \times 3 + {3}^{2} - 3 \\ = {x}^{2} + 6x + 9 - 3 \\ = {x}^{2} + 6x + 6$