1.

Factorization: \[\mathbf{7}-\mathbf{12x}-\mathbf{4}{{\mathbf{x}}^{\mathbf{2}}}\]

A. \[\left( 1-2x \right)\left( 7+2x \right)\]
B. \[\left( 1-2x \right)\left( 7-2x \right)\]
C. \[\left( 1-x \right)\left( 7+x \right)\]
D. \[\left( 1+2x \right)\left( 4+x \right)\]
Answer» B. \[\left( 1-2x \right)\left( 7-2x \right)\]


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