1.

1). 32). 2.13). 14). 0.1

Answer»

$(\begin{array}{l}\FRAC{{0.7\; \TIMES 0.7 \times 0.7\; + \;0.3 \times 0.3 \times 7.3}}{{0.7 \times 0.7\; + \;0.3 \times 0.3\; + \;0.42}}\\= \;\frac{{0.343\; + \;0.09 \times 7.3}}{{{{0.7}^2}\; + \;{{0.3}^2}\; + \;2 \times 0.3 \times 0.7}}\;\\= \;\frac{{0.343\; + \;0.657}}{{{{\left( {0.7\; + \;0.3} \RIGHT)}^2}}}\end{array})$

= 1/1 = 1



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