Question

x=1/2

(x+1)³=

x³+1=



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Answer 1

${(x + 1)}^{3} = {x}^{3} + 3 \times {x }^{2} \times 1 + 3 \times x \times {1}^{2}$

${x}^{3} + 3 {x}^{2} + 3x$

$( \frac{1}{2} ) {}^{3} + 3 \times ( \frac{1}{2}) {}^{2} + 3 \times ( \frac{1}{2} )$

$\frac{1}{8} + \frac{3}{4} + \frac{3}{2}$

$\frac{1 + 6 + 12}{8}$

$\frac{19}{8}$

${x}^{3} + 1$

$( \frac{1}{2} ) {}^{3} + 1$

$\frac{1}{8} + 1$

$\frac{1 + 8}{8}$

$\frac{9}{8}$