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A()= 4(-1)-9
A = 4(x² -2x +1) -9
A = 4x² -8x +4 -9
A = 4x² -8x -5
B()= (2-5)(2+1)
B = 4x² +2x -10x -5
B = 4x² -8x -5
A()= 4(-1)-9
A = 4(x² -2x +1) -9
A = 4x² -8x +4 -9
A = 4x² -8x -5
B()= (2-5)(2+1)
B = 4x² +2x -10x -5
B = 4x² -8x -5
[tex]A(x)= 4( x^{2} -2x+1)-9
=4 x^{2} -8x+4-9
=4 x^{2} -8x-5[/tex]
[tex]B(x)=(2x-5)(2x+1) =4 x^{2} +2x-10x-5 =4 x^{2} -8x-5[/tex]
[tex]B(x)=(2x-5)(2x+1) =4 x^{2} +2x-10x-5 =4 x^{2} -8x-5[/tex]