16(x-1)^2-(x+2)^2
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16(x-1)^2-(x+2)^216(x-1)^2-(x+2)^216(x-1)^2-(x+2)^216(x-1)^2-(x+2)^2=[4(x-1)-(x+2)][4(x-1)+(x+2)]=(4
16(x-1)^2-(x+2)^2
16(x-1)^2-(x+2)^2
16(x-1)^2-(x+2)^2
16(x-1)^2-(x+2)^2
=[4(x-1)-(x+2)] [4(x-1)+(x+2)]
=(4x-4-x-2)(4x-4+x+2)
=(3x-6)(5x-2)
=3(x-2)(5x-2)
(x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3)(x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3)
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