1.

\left. \begin{array} { l } { ( 4 x + 7 ) ( 3 x + 2 ) } \\ { \frac { 2 } { - ( 7 x ^ { 2 } + 8 y ^ { 2 } ) } ( 7 x } \end{array} \right.

Answer»

(4x+7)(3x+2)= 12x²+8x+21x+14= 12x²+29x+14



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